Disclosed is a compound represented by formula (1) or a pharmacologically acceptable salt thereof. (In the formula, A represents a group that is represented by formula (A-1)； R and R may be the same or different and each independently represents a C alkyl group which may be substituted by one to three halogen atoms； m and n each independently represents an integer of 0-5； X represents a hydroxyl group or an aminocarbonyl group； Z represents a single bond or the like； and R represents an optionally substituted C alkyl group, an optionally substituted C aryl group or the like.)
