Using COc1ccc(C(=O)Nc2ccc3c(c2Cl)CNCC3)cc1C(F)(F)F, CC(=O)OC=O to produce COc1ccc(C(=O)Nc2ccc3c(c2Cl)CN(C=O)CC3)cc1C(F)(F)F, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.