The present invention provides a compound of formula (I): wherein the variables are as defined herein. The present invention also provides processes for preparing the compounds of formula (I), and intermediates thereof, pharmaceutical compositions comprising those compounds, and methods of using the compounds and compositions.本發明係提供如下式I之化合物:其中之變數如本文中所定義。本發明亦提供用於製備式I化合物及其中間產物的方法、包括這些化合物之醫藥組合物,及使用該化合物及組合物之方法。