We provide compounds given by Formula I, which is shown in FIG. 3, or pharmaceutically acceptable salts thereof, as well as formulations thereof and methods of use of those compounds and formulations for treatment of cancer.吾人提供圖3中顯示之由式I給定之化合物或其醫藥上可接受之鹽,及其調配物及彼等化合物及調配物於治療癌症之使用方法。無