Phenazinium, 3-[[4-[[4-chloro-6-[(3-phosphonophenyl)amino]-1,3,5-triazin-2-yl]amino]-2-sulfophenyl]amino]-7-[ethyl[(3-sulfophenyl)methyl]amino]-5-(4-methoxy-3-sulfophenyl)-, hydroxide, inner salt, triammonium salt