Using COc1ccc(C2(C)COCC(N(C)N=O)=N2)cc1, C[N+](=O)[O-] to produce COc1ccc(C2(C)COC/C(=C/[N+](=O)[O-])N2)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.