Using COc1ccccc1CN(C(=O)CN=[N+]=[N-])c1ccccc1Oc1ccccc1 to produce COc1ccccc1CN(C(=O)CN)c1ccccc1Oc1ccccc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.