Using CCOC(=O)CN1C(=O)C(NC(=O)[C@H](Cc2ccccc2)SC(C)=O)CCCC12CCCC2 to produce O=C(O)CN1C(=O)C(NC(=O)[C@@H](S)Cc2ccccc2)CCCC12CCCC2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.