Disclosed is a compound of formula (I) where the substituents are as disclosed in the specification. An example of a compound of formula (I) is 3-{ 4-{ 4-[(1E)-3,3-dimethyl-1-triazenyl]-benzoyl} -phenoxy} propionic acid. Also disclosed is a process for preparing a compound of formula (I) and the use of a compound of formula (I) in the preparation of a medicament for the treating of cancer.