Using CCn1c(-c2ccc(C(=O)OC)cc2)nc2cc(S(=O)(=O)C(F)(F)F)ccc21 to produce CCn1c(-c2ccc(C(=O)O)cc2)nc2cc(S(=O)(=O)C(F)(F)F)ccc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.