CC(=O)OC1OC(c2ccoc2)C[C@@]12C1CCC3O[C@]3(C)[C@]1(C)[C@H](OC(C)=O)[C@H](OC(C)=O)[C@H]2C
Molecules possible for drug usually have no more than 5 Hydrogen bond acceptor. How many hydrogen bond acceptors does the molecule have?