Using COC(=O)[C@@H](NC(=O)C1(Cc2ccccc2)CCCN1C(=O)OCc1ccccc1)[C@@H](C)OC(C)=O to produce COC(=O)[C@@H](NC(=O)C1(Cc2ccccc2)CCCN1)[C@@H](C)OC(C)=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.