COc1ccc(C[C@H]2CN3C(=NC[C@@H]3Cc3ccc(O)cc3)N2C[C@H](C)NC(=O)c2ccc(C)c(Br)c2)cc1
Molecules possible for drug usually have no more than 5 Hydrogen bond acceptor. How many hydrogen bond acceptors does the molecule have?