CN(c1ccccc1)S(=O)(=O)c1ccc(Cl)c(C(=O)Nc2ccc(-c3nc4ccccc4[nH]3)cc2)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?