C[C@H]1CCCCO[C@@H](CN(C)S(=O)(=O)c2ccc(F)cc2)[C@H](C)CN([C@@H](C)COC(=O)C(C)(C)C)C(=O)c2cc(NC(=O)Nc3ccccc3)ccc2O1
Molecules possible for drug usually have no more than 5 Hydrogen bond acceptor. How many hydrogen bond acceptors does the molecule have?