Using O=[N+]([O-])c1cccc2cn[nH]c12, CC(C)(C)OC(=O)OC(C)(C)C to produce CC(C)(C)OC(=O)n1ncc2cccc([N+](=O)[O-])c21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.