C[C@H]1CN([C@H](C)CO)C(=O)c2cc(N(C)C)ccc2O[C@H](C)CCCCO[C@H]1CN(C)C(=O)Cc1ccccc1
Molecules possible for drug usually have no more than 5 Hydrogen bond acceptor. How many hydrogen bond acceptors does the molecule have?