The present invention provides a compound of the formula (I) or (II) and a pharmaceutical composition thereof, and a method of preventing and/or treating an immune-related disorder using the compound of the formula (I) or (II).本發明提供式(I)或(II)化合物及其藥物組合物,以及使用式(I)或(II)化合物預防和/或治療免疫相關病症的方法。