Using O=C(Cl)OCc1ccccc1, CNC1=N[C@@H]2[C@@H](O)[C@H](O)[C@@H](CO)O[C@@H]2S1 to produce CN(C(=O)OCc1ccccc1)C1=N[C@@H]2[C@@H](O)[C@H](O)[C@@H](CO)O[C@@H]2S1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.