CC(=O)OC1CC[C@@]2(C)C(=CC[C@H]3[C@@H]4C[C@@H](n5ccnc5)C(OC(C)=O)[C@@]4(C)CC[C@@H]32)C1
Molecules possible for drug usually have no more than 5 Hydrogen bond acceptor. How many hydrogen bond acceptors does the molecule have?