COc1ccc(C(=O)C(C)OC(=O)c2cccc(S(=O)(=O)Nc3c(C)n(C)n(-c4ccccc4)c3=O)c2)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?