N-[2-[(3,4-dihydroxybenzoyl)amino]phenyl]-3,4-dihydroxybenzamide

[2-acetyloxy-4-(2-chloroacetyl)phenyl] acetate

N-[4-[(3,4-dihydroxybenzoyl)amino]phenyl]-3,4-dihydroxybenzamide

N,N-二乙基-3,4-二羟基苯甲酰胺

1-(3,4-二甲氧基苯基)-1-丙酮