Cc1ccc(N(C(=O)CC(=O)N2N=C(c3ccccc3)C(/N=N/c3ccc([N+](=O)[O-])cc3)C2=O)C(=O)c2ccc(Cl)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?