CCCC12C(=O)C(C)(C(c3ccccc3)=C1c1ccccc1)C1C(=O)N(c3ccc(C)cc3)C(=O)C12
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?