Using CN(C)CCC(=O)c1cccs1, COC(=O)C(N[C@@H](C)C(=O)N1CCC[C@H]1C(=O)OC(C)(C)C)C(=O)OC to produce COC(=O)C(CCC(=O)c1cccs1)(N[C@@H](C)C(=O)N1CCC[C@H]1C(=O)OC(C)(C)C)C(=O)OC, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.