CN1CCN(c2ccc(S(=O)(=O)N3CCCCC3)cc2NC(=O)/C=C/c2ccc(Cl)c([N+](=O)[O-])c2)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?