4-羟基苯乙酸甲酯

methyl 2-(3-chloro-5-(2,6-dichloro-4-(2-methoxy-2-oxoethyl)phenoxy)-1-methoxy-4-oxocyclohexa-2,5-dien-1-yl)acetate

methyl 2-{4-hydroxy-3-[4-(2-methoxy-2-oxoethyl)phenoxy]phenyl}acetate

2-{4-[5-(carboxymethyl)-2-methoxyphenoxy]phenyl}acetic acid