英文名称
[Diphenyl-[(1,3,5,7-tetramethyl-2,2,6,6-tetraoxo-2$l^{6},6$l^{6}-dithia-1,3,5,7-tetraza-4$l^{5}-phosphaspiro[3.3]heptan-4-yl)imino]-$l^{5}-phosphanyl]methyl-diphenyl-[(1,3,5,7-tetramethyl-2,2,6,6-tetraoxo-2$l^{6},6$l^{6}-dithia-1,3,5,7-tetraza-4$l^{5}-phosphaspiro[3.3]heptan-4-yl)imino]-$l^{5}-phosphane