Using Cc1cc2c([N+](=O)[O-])c(Oc3ccc(CC(=O)O)c(C)c3C)ccc2[nH]1, CO to produce COC(=O)Cc1ccc(Oc2ccc3[nH]c(C)cc3c2N)c(C)c1C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.