COc1ccc2[nH]c3c(c2c1)[C@H]1CCC(C(C)(C)C)C[C@H]1[C@H]1C(=O)N(c2ccccc2)C(=O)[C@@H]31
Molecules possible for drug usually have no more than 5 Hydrogen bond acceptor. How many hydrogen bond acceptors does the molecule have?