Using CN(C(=O)OC(C)(C)C)c1ccc2onc(OCC(COC(N)=O)NC(=O)OC(C)(C)C)c2c1 to produce CNc1ccc2onc(OCC(N)COC(N)=O)c2c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.