Using CC(C)(C)OC(=O)NCc1cccc(CN2C(=O)c3cccc(NC(=O)c4ccc(Cl)s4)c3C2O)c1 to produce NCc1cccc(CN2Cc3c(NC(=O)c4ccc(Cl)s4)cccc3C2=O)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.