Using CCC(N)c1ccc(Cl)c2nc3n(c12)CCCN3c1c(Cl)cc(Cl)cc1Cl, COC(=O)Cl to produce CCC(NC(=O)OC)c1ccc(Cl)c2nc3n(c12)CCCN3c1c(Cl)cc(Cl)cc1Cl, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.