Using O=CNc1nc(C(=NOCC(F)(F)F)C(=O)NC2C(=O)N3C(C(=O)O)=CCS[C@H]23)cs1 to produce Nc1nc(C(=NOCC(F)(F)F)C(=O)NC2C(=O)N3C(C(=O)O)=CCS[C@H]23)cs1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.