Using O=C(O)c1ccc2ccccc2n1, CC(C)(C)NC(=O)[C@@H]1CCCCN1C[C@@H](O)[C@H](Cc1ccccc1)NC(=O)[C@@H](N)CS to produce CC(C)(C)NC(=O)[C@@H]1CCCCN1C[C@@H](O)[C@H](Cc1ccccc1)NC(=O)[C@H](CS)NC(=O)c1ccc2ccccc2n1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.