Cc1cc(C)c(S(=O)(=O)Nc2cccc(C(=O)O)c2)cc1S(=O)(=O)Nc1cccc(C(=O)O)c1
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?