C[C@]12CC[C@H](O)C=C1CC[C@@H]1[C@@H]2CC[C@]2(C)C(c3ccc(=O)oc3)CC[C@]12O
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?