Using Cn1nnnc1SCC1NCCc2cc(O)c(O)cc21, O=C(Cl)OCC(Cl)(Cl)Cl to produce Cn1nnnc1SCC1c2cc(O)c(O)cc2CCN1C(=O)OCC(Cl)(Cl)Cl, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.