The present invention provides formula (I) compound in acetate form, and the method and its therapeutical uses of the compounds of this invention are prepared with what. The present invention further provides the combination of pharmacologically active agent and pharmaceutical compositions.本發明提供呈乙酸鹽形式的式(I)化合物,用於製備本發明化合物的方法及其治療用途。本發明進一步提供藥理活性劑的組合和藥物組合物。