COC(=O)C[C@@H]1C(C)(C)[C@@H]2O[C@@]34C[C@@H]2C(=O)[C@]1(C)[C@H]3CC[C@@]1(C)[C@H](c2ccoc2)OC(=O)C[C@]14O
Molecules possible for drug usually have no more than 5 Hydrogen bond acceptor. How many hydrogen bond acceptors does the molecule have?