2,4,4,6,8,8-HEXACHLORO-N~2~,N~6~-DIMETHYL-N~2~,N~6~-DIPHENYL-1,3,5,7,2.LAMBDA.~5~,4.LAMBDA.~5~,6.LAMBDA.~5~,8.LAMBDA.~5~-TETRAAZATETRAPHOSPHOCINE-2,6-DIAMINE