Using C[C@@H]1CCS(=O)(=O)N1, COC(=O)c1ccc(CBr)cc1 to produce COC(=O)c1ccc(CN2[C@H](C)CCS2(=O)=O)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.