C[C@@H]1CC[C@H]2C(=O)N3[C@@H](CC[C@@H](C)[C@@H]3c3ccc(Br)cc3)C(=O)N2[C@@H]1c1ccc(Br)cc1
Molecules possible for drug usually have no more than 5 Hydrogen bond acceptor. How many hydrogen bond acceptors does the molecule have?