Using CC(=O)Oc1c[nH]c2ccccc12, O=C1Nc2ccccc2C1=O to produce O=C1C(c2c(O)[nH]c3ccccc23)=Nc2ccccc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.