Using C#Cc1cc2c(C)nc(N)nc2n(C(C)C)c1=O, CCN(CC)C(=O)OCN=[N+]=[N-] to produce CCN(CC)C(=O)OCn1cc(-c2cc3c(C)nc(N)nc3n(C(C)C)c2=O)nn1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.