Using COC(=O)c1nn(-c2ccc(Cl)c(Cl)c2)c(=O)cc1OC1CCN(C(=O)OC(C)(C)C)CC1 to produce CC(C)(C)OC(=O)N1CCC(Oc2cc(=O)n(-c3ccc(Cl)c(Cl)c3)nc2C(=O)O)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.