CCC(=O)Nc1cccc(NC(=O)c2c(Cl)c(Cl)c(Cl)c(Cl)c2-c2nc3ccccc3[nH]2)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?