Using CCOC(=O)c1sc(N2CCC(NC(=O)c3[nH]c(C)c(Cl)c3Cl)CC2)nc1COC to produce CCOC(=O)c1sc(N2CCC(NC(=O)c3[nH]c(C)c(Cl)c3Cl)CC2)nc1CO, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.