Using O=N[O-], O=C(C(c1ccncc1)c1ccc2ccccc2c1)C(c1ccncc1)c1ccc2ccccc2c1 to produce O=C(C(=NO)c1ccncc1)c1ccc2ccccc2c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.