Using CC(=O)SCC[C@H](NC(=O)OCc1ccccc1)C(=O)NCCCCCO to produce CC(=O)SCC[C@H](NC(=O)OCc1ccccc1)C(=O)NCCCCC=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.