7-butanoyl-2,4-dimethyl-1,4-benzoxazin-3-one

2,2,4-三甲基-7-(2-亚甲基-1-氧代丁基)-2H-1,4-苯并恶嗪-3(4H)-酮

3,5-dimethyl-5,6-dihydrocyclopenta[f][1,3]benzoxazole-2,7-dione