Using O=C1NC(=O)C(=O)C(=O)N1, c1ccc(-c2ccco2)cc1 to produce O=C1NC(=O)C(O)(c2ccc(-c3ccccc3)o2)C(=O)N1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.