O=C1C(Cl)=C(N2CCN(C(c3ccccc3)c3ccc(Cl)cc3)CC2)C(=O)N1c1ccc(Cl)c(Cl)c1
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?