Cc1ccc(-c2cc(-c3ccc(Cl)cc3)nc(/N=C3\C(=O)N(CN4CCOCC4)c4ccc(Cl)cc43)n2)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?