Using CC(C)(C)COC1=C(OCC(C)(C)C)C(=O)c2c(cccc2[N+](=O)[O-])C1=O to produce COC1=C(OC)C(=O)c2c(N)cccc2C1=O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.