Cc1cccc([C@@H]2[C@@H]3C(=O)N(Cc4ccccc4)C(=O)[C@@H]3[C@]3(Cc4ccc(Cl)cc4)C(=O)N(c4cccc(Br)c4)C(=O)N23)c1
Molecules possible for drug usually have no more than 5 Hydrogen bond acceptor. How many hydrogen bond acceptors does the molecule have?