Using O=C1NC(=O)C2(CC[C@@H](C(=O)OCc3ccccc3)C2)N1 to produce O=C1NC(=O)C2(CC[C@@H](C(=O)O)C2)N1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.