Using O=C(NC(=S)N[C@@]1(c2ccc(F)cc2F)COCC[C@H]1CO)OCC1c2ccccc2-c2ccccc21 to produce NC1=N[C@@]2(c3ccc(F)cc3F)COCC[C@H]2CS1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.