Using CSc1ccc(C=O)cc1, Clc1nc(N2CCOCC2)c2sccc2n1 to produce CSc1ccc(C(O)c2cc3nc(Cl)nc(N4CCOCC4)c3s2)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.