O=C([O-])C[n+]1ccc(-c2c3nc(c(-c4cc[n+](CC(=O)[O-])cc4)c4ccc([nH]4)c(-c4cc[n+](CC(=O)[O-])cc4)c4nc(c(-c5cc[n+](CC(=O)[O-])cc5)c5ccc2[nH]5)C=C4)C=C3)cc1    mol37214