CC1CCC2C(=O)N3C(CCC(C)[C@@H]3c3cccc(N4CCOCC4)c3)C(=O)N2C1c1cccc(N2CCOCC2)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?