The present invention relates to the antiviral compound of following formula expression, the composition comprising this compound and including the treatment method for giving this compound and the method and intermediate that are related to that can be used to prepare this compound, wherein the definition of group is defined as in the description in formula.本發明涉及下式表示的抗病毒化合物、包含這種化合物的組合物、和包括給予這種化合物的治療方法、以及涉及可用於製備這種化合物的方法和中間體,其中式中基團的定義如說明書所定義。