CCOC(=O)[C@H]1[C@H]2COc3ccc(Br)cc3[C@H]2N2C(=O)CN(Cc3ccc(C)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?