SMILES: C1=CC=C(C=C1)[N+]2=C3C=C(C4=C(C3=NC5=CC=CC=C52)C=CC(=C4)S(=O)(=O)[O-])NC6=CC=C(C=C6)S(=O)(=O)[O-]
Description: The molecule is an organosulfonate oxoanion obtained by deprotonation of the sulfo groups of 7-phenyl-5-[(4-sulfophenyl)imino]-5,7-dihydrobenzo[a]phenazine-3-sulfonic acid. It is a conjugate base of an azocarmine G free acid.