Using COc1cc([N+](=O)[O-])c(C(O)C[N+](=O)[O-])nc1OC to produce COc1cc([N+](=O)[O-])c(C=C[N+](=O)[O-])nc1OC, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.