Using COC(=O)[C@@H]1CC(=O)CN1C(=O)OCc1ccccc1, SCCS to produce COC(=O)[C@@H]1CC2(CN1C(=O)OCc1ccccc1)SCCS2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.