Using COC(=O)CCNC(=O)C1CN(c2ccc(-c3noc(=O)[nH]3)cc2)C(=O)O1 to produce O=C(O)CCNC(=O)C1CN(c2ccc(-c3noc(=O)[nH]3)cc2)C(=O)O1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.