Cc1ccc(S(=O)(=O)N(CC(=O)N/N=C/c2ccccc2C(=O)O)c2cc(Cl)cc(Cl)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?