GSK-2011 GSK 3GK CM 99E - EPSG:21333

WKT

PROJCS["GSK-2011_GSK_3GK_CM_99E", 
	GEOGCS["GSK-2011", 
		DATUM["Geodezicheskaya_Sistema_Koordinat_2011", 
			SPHEROID["GSK-2011", 6378136.5, 298.2564151]], 
		PRIMEM["Greenwich", 0.0], 
		UNIT["Degree", 0.0174532925199433]], 
	PROJECTION["Transverse_Mercator"], 
	PARAMETER["False_Easting", 250000.0], 
	PARAMETER["False_Northing", 0.0], 
	PARAMETER["Central_Meridian", 99.0], 
	PARAMETER["Scale_Factor", 1.0], 
	PARAMETER["Latitude_Of_Origin", 0.0], 
	UNIT["Meter", 1.0]]

WKT2

PROJCRS["GSK-2011_GSK_3GK_CM_99E", 
	BASEGEOGCRS["GSK-2011", 
		DATUM["Geodezicheskaya_Sistema_Koordinat_2011", 
			ELLIPSOID["GSK-2011", 6378136.5, 298.2564151]], 
		PRIMEM["Greenwich", 0.0], 
		CS[ellipsoidal, 2], 
		AXIS["Latitude (lat)", north, 
			ORDER[1]], 
		AXIS["Longitude (lon)", east, 
			ORDER[2]], 
		ANGLEUNIT["Degree", 0.0174532925199433]], 
	CONVERSION["Transverse_Mercator", 
		METHOD["Transverse_Mercator"], 
		PARAMETER["False_Easting", 250000.0], 
		PARAMETER["False_Northing", 0.0], 
		PARAMETER["Central_Meridian", 99.0], 
		PARAMETER["Scale_Factor", 1.0], 
		PARAMETER["Latitude_Of_Origin", 0.0]], 
	CS[Cartesian, 2], 
	AXIS["Northing (Y)", north, 
		ORDER[1]], 
	AXIS["Easting (X)", east, 
		ORDER[2]], 
	LENGTHUNIT["Meter", 1.0], 
	ID["EPSG", "21333"]]

Data from @esri/proj-codes

{
  "wkid": 21333,
  "latestWkid": 21333,
  "gcsWkid": 7683,
  "macro": "PE_PCS_GSK_2011_GSK_3GK_CM_99E",
  "name": "GSK-2011_GSK_3GK_CM_99E",
  "wkt": "PROJCS[\"GSK-2011_GSK_3GK_CM_99E\",GEOGCS[\"GSK-2011\",DATUM[\"Geodezicheskaya_Sistema_Koordinat_2011\",SPHEROID[\"GSK-2011\",6378136.5,298.2564151]],PRIMEM[\"Greenwich\",0.0],UNIT[\"Degree\",0.0174532925199433]],PROJECTION[\"Transverse_Mercator\"],PARAMETER[\"False_Easting\",250000.0],PARAMETER[\"False_Northing\",0.0],PARAMETER[\"Central_Meridian\",99.0],PARAMETER[\"Scale_Factor\",1.0],PARAMETER[\"Latitude_Of_Origin\",0.0],UNIT[\"Meter\",1.0]]",
  "wkt2": "PROJCRS[\"GSK-2011_GSK_3GK_CM_99E\",BASEGEOGCRS[\"GSK-2011\",DATUM[\"Geodezicheskaya_Sistema_Koordinat_2011\",ELLIPSOID[\"GSK-2011\",6378136.5,298.2564151]],PRIMEM[\"Greenwich\",0.0],CS[ellipsoidal,2],AXIS[\"Latitude (lat)\",north,ORDER[1]],AXIS[\"Longitude (lon)\",east,ORDER[2]],ANGLEUNIT[\"Degree\",0.0174532925199433]],CONVERSION[\"Transverse_Mercator\",METHOD[\"Transverse_Mercator\"],PARAMETER[\"False_Easting\",250000.0],PARAMETER[\"False_Northing\",0.0],PARAMETER[\"Central_Meridian\",99.0],PARAMETER[\"Scale_Factor\",1.0],PARAMETER[\"Latitude_Of_Origin\",0.0]],CS[Cartesian,2],AXIS[\"Northing (Y)\",north,ORDER[1]],AXIS[\"Easting (X)\",east,ORDER[2]],LENGTHUNIT[\"Meter\",1.0],ID[\"EPSG\",\"21333\"]]",
  "description": "GSK-2011 GSK 3GK CM 99E",
  "authority": "EPSG",
  "version": "10.028(12.9.0)",
  "deprecated": "no",
  "areaname": "Russia - 97.5~E to 100.5~E onshore",
  "extent": {
    "slat": 49.79,
    "nlat": 80.9,
    "llon": 97.5,
    "rlon": 100.5
  }
}