Using Cc1ncn(C(c2ccccc2)(c2ccccc2)c2ccccc2)c1CN=[N+]=[N-] to produce Cc1ncn(C(c2ccccc2)(c2ccccc2)c2ccccc2)c1CN, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.