Using O=C([O-])[O-], CCn1c(=O)c2[nH]c(/C=C/c3ccc(OC)c(OC)c3)nc2n(CC)c1=O to produce CCn1c(=O)c2c(nc(/C=C/c3ccc(OC)c(OC)c3)n2C)n(CC)c1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.