Using Clc1cnc(-c2ccccc2)c(-c2ccccc2)n1, [N-]=[N+]=[N-] to produce [N-]=[N+]=Nc1cnc(-c2ccccc2)c(-c2ccccc2)n1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.