CC(C)CC(C(=O)O)N1C(=O)[C@@H]2[C@@H]3C[C@@H](C(Br)C3Br)[C@@H]2C1=O
Hydrogen bond acceptor: The atom, ion, or molecule component of a hydrogen bond which does not supply the bridging (shared) hydrogen atom. How many hydrogen bond acceptors does the molecule have?