CCCCN1CC(=O)N2[C@H](c3ccc(OC)cc3)[C@@H]3C(=O)N(CC)C(=O)[C@@H]3[C@]2(Cc2ccccc2)C1=O
Molecules possible for drug usually have no more than 5 Hydrogen bond acceptor. How many hydrogen bond acceptors does the molecule have?