CC(=O)OC1CC[C@]2(C)C(CC(OC(C)=O)[C@@]3(C)C4=CC(=O)OC(c5ccoc5)[C@]4(C)CCC23)C1(C)C
Molecules possible for drug usually have no more than 5 Hydrogen bond acceptor. How many hydrogen bond acceptors does the molecule have?