Using O=C1c2ccccc2-c2c1cccc2-c1nc2ccncc2[nH]1, NO to produce ON=C1c2ccccc2-c2c1cccc2-c1nc2ccncc2[nH]1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.