Using Nc1nc(=O)c2c(ncn2Cc2ccccc2)[nH]1, O=N[O-] to produce O=c1[nH]c(=O)c2c(ncn2Cc2ccccc2)[nH]1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.