Using O=N[O-], CCc1cc2nc(N)c(-c3ccccc3)cc2c(CC)n1 to produce CCc1cc2[nH]c(=O)c(-c3ccccc3)cc2c(CC)n1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.