COc1ccc(N2CCN(C(=O)CCS(=O)(=O)c3cc(Br)cc4c3N(C(=O)C3CC3)CC4)CC2)cc1
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?