Using COc1c(O)ccc2c1N=C(C=C(O)c1cccnc1)N1CCN=C21, CCC(Cl)C(=O)OC to produce COC(=O)CCCOc1ccc2c(c1OC)N=C(C=C(O)c1cccnc1)N1CCN=C21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.