Using Sc1nc2cc3c(cc2[nH]1)OCO3, COc1c[nH+]c(CCl)cc1OC to produce COc1cnc(CSc2nc3cc4c(cc3[nH]2)OCO4)cc1OC, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.