Using CCOC(=O)C=Cc1ccc2c(c1)C[C@@H](NC(=O)OCc1ccccc1)CC2 to produce O=C(O)C=Cc1ccc2c(c1)C[C@@H](NC(=O)OCc1ccccc1)CC2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.