Using O=C1Nc2cnc(Cl)nc2N2CCOCC12, O=S(=O)(OCC(F)(F)F)C(F)(F)F to produce O=C1C2COCCN2c2nc(Cl)ncc2N1CC(F)(F)F, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.