Using CCOC(CCNS(=O)(=O)Nc1nc2ccccc2nc1OC(c1cccnc1)C(F)(F)F)OCC to produce O=CCCNS(=O)(=O)Nc1nc2ccccc2nc1OC(c1cccnc1)C(F)(F)F, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.