Cc1c(C(=O)C/C(=N/NC(=O)C[n+]2ccccc2)C(=O)Nc2ccccc2)[n+]([O-])c2ccccc2[n+]1[O-].[Cl-]
Molecules possible for drug usually have no more than 5 Hydrogen bond acceptor. How many hydrogen bond acceptors does the molecule have?