Using CCOC(=O)C=CC(=O)c1ccc(OC)c(OC)c1, [N-]=[N+]=[N-] to produce CCOC(=O)c1nn[nH]c1C(=O)c1ccc(OC)c(OC)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.