Using Sc1nc2ccccc2s1, CN(C(=O)[C@H](CCc1ccccc1)NC(=O)OC(C)(C)C)[C@H](CO)CCCNC(=O)OC(C)(C)C to produce CN(C(=O)[C@H](CCc1ccccc1)NC(=O)OC(C)(C)C)[C@@H](CCCNC(=O)OC(C)(C)C)C(=O)Sc1nc2ccccc2s1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.