Cn1ccc(=Nc2ccc(NC(=O)c3ccc(/N=c4\ccn(C)c5ccc([N+](=O)[O-])cc45)cc3)cc2)cc1
Hydrogen bond acceptor: The atom, ion, or molecule component of a hydrogen bond which does not supply the bridging (shared) hydrogen atom. How many hydrogen bond acceptors does the molecule have?