129037-04-3 Benzenaminium, 4-((4-(dimethylamino)phenyl)(4-(dimethyliminio)-2,5-cyclohexadien-1-ylidene)methyl)-N-ethyl-N,N-dimethyl-, (SP-4-1)-tetrachloroplatinate(2-) (1:1) TC-Pl-Mgc Tetrachloroplatinate dianion-methyl green complex