[{"from": "human", "value": "Provide a brief overview of this molecule. [C][=C][C][=C][Branch1][Branch1][C][=C][Ring1][=Branch1][N+1][=C][C][=C][Branch2][Ring2][Ring1][C][=C][Branch1][#C][C][Ring1][=Branch1][=N][C][=C][C][=C][C][=C][Ring1][=Branch1][Ring1][=C][C][=C][C][=Branch1][Ring2][=C][Ring1][=C][S][=Branch1][C][=O][=Branch1][C][=O][O-1][N][C][=C][C][=C][Branch1][Branch1][C][=C][Ring1][=Branch1][S][=Branch1][C][=O][=Branch1][C][=O][O-1]"}, {"from": "gpt", "value": "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."}]