3-acetyloxy-4-ethoxy-4-oxobutanoate

1,2-bis(1-methylbenzimidazol-2-yl)ethanol

苹果酸奈诺沙星

2H,8H-苯并[1,2-b:5,4-b']二吡喃-2,8-二酮

pyrano[2,3-f]chromene-2,8-dione