Using CCOC(=O)c1cc(-c2cnc(Oc3ccccc3)nc2)[nH]n1 to produce O=C(O)c1cc(-c2cnc(Oc3ccccc3)nc2)[nH]n1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.