O=[N+]([O-])/C(C(=C(Cl)Cl)N1CCN(Cc2ccccc2)CC1)=C1\NCCN1Cc1ccc(Cl)nc1
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?