The chemical compound formula (i) or that the salt which it can allow pharmacy (in formula, m, as for n, R, R, R, R, and R, as in definition is in this bill,). In addition, the medicine constituent, usage and preparation manner of aforementioned chemical compound are offered.式(I)の化合物又はその薬学的に許容しうる塩(式中、m、n、R1、R2、R3、R4、及びR5は、本明細書に定義の通りである)。また、医薬組成物、前記化合物の使用方法及び調製方法を提供する。