Using Cn1c2ccccc2c2ccsc21, O=C(Oc1ccccn1)C(F)(F)F to produce Cn1c2ccccc2c2c(C(=O)C(F)(F)F)csc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.