COc1ccc2c(c1)OC[C@H]1[C@H]2N2C(=O)CN(Cc3ccc(Cl)cc3)C(=O)[C@@]2(C)[C@H]1c1ccccc1
Molecules possible for drug usually have no more than 5 Hydrogen bond acceptor. How many hydrogen bond acceptors does the molecule have?