Using CC(C)(C)OC(=O)NC1CCCN(C(=O)OCc2ccccc2)C1CCN=[N+]=[N-] to produce [N-]=[N+]=NCCC1C(N)CCCN1C(=O)OCc1ccccc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.