Using CI, OCc1nn(-c2ccc(C(F)(F)F)cc2)nc1Oc1cccc(OC(F)(F)F)c1 to produce COCc1nn(-c2ccc(C(F)(F)F)cc2)nc1Oc1cccc(OC(F)(F)F)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.