2,3,4,5-tetramethoxyphenol

1-(2-hydroxy-3,4,5-trimethoxyphenyl)ethanone

2,3,4-三甲氧基苯酚

2,3,5-trimethoxycyclohexa-2,5-diene-1,4-dione

1,2,3,4-四甲氧基苯