Using COCNC(=O)C1CSCN1C(=O)C1CSCN1C(=O)OC(C)(C)C, FC(F)(F)C(F)(F)I to produce CC(C)(C)OC(=O)N1CSCC1C(=O)N1CSCC1C(=O)C(F)(F)C(F)(F)F, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.