Cc1ccc(/N=N/c2c(-c3ccccc3)nn(C(=O)CC(=O)Nc3ccc(Cl)cc3)c2-c2ccccc2)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?