Using O=S1(=O)CCNCC1, O=C(O)c1cnc(O[C@@H]2C[C@H]3CC[C@@H]2C3)nc1C(F)(F)F to produce O=C(c1cnc(O[C@@H]2C[C@H]3CC[C@@H]2C3)nc1C(F)(F)F)N1CCS(=O)(=O)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.