Using ClCOCc1ccccc1, FC(F)C(F)(F)Sc1nc(-c2ccccc2)c(-c2ccccc2)[nH]1 to produce FC(F)C(F)(F)Sc1nc(-c2ccccc2)c(-c2ccccc2)n1COCc1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.