Using NC(=O)c1sc2nc(N3CCC4(CC3)OCCO4)cc(OCC(F)(F)F)c2c1N to produce NC(=O)c1sc2nc(N3CCC(=O)CC3)cc(OCC(F)(F)F)c2c1N, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.