Using CCCC(Nc1cnc(-c2ccc(C(F)(F)F)cc2)cn1)c1ccc(C(=O)OCC)cc1 to produce CCCC(Nc1cnc(-c2ccc(C(F)(F)F)cc2)cn1)c1ccc(C(=O)O)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.