Using COC(=O)CC(=O)Nc1ccc(C(F)(F)F)cc1C(=O)c1cc(Cl)ccc1O to produce O=c1[nH]c2ccc(C(F)(F)F)cc2c2c1c(=O)oc1ccc(Cl)cc12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.