CCOC(=O)[C@@H]1[C@H]2COc3ccc(Br)cc3[C@H]2N2C(=O)N(c3ccc(Cl)cc3)C(=O)[C@]12C
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?