Using O=C1CC[C@@H](C(=O)N2CCC[C@H]2C(=O)OCc2ccccc2)N1 to produce O=C1CC[C@@H](C(=O)N2CCC[C@H]2C(=O)O)N1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.