C=C[C@H]1CC[C@H]2[C@@H]3CC=C4C[C@@H](OC5OCC(O)C(O)C5O)CC[C@]4(C)[C@H]3CC[C@@]21C
Molecules possible for drug usually have no more than 5 Hydrogen bond acceptor. How many hydrogen bond acceptors does the molecule have?