CC1(C)CC(=O)C2=C(C1)O[C@@]1(CCCCN3C(=O)c4ccccc4C3=O)Cc3ccccc3[C@@H]2O1
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?