6 101a1b1c1 41 426 107 16Provided is a compound represented by formula (1) or a pharmacologically acceptable salt thereof. (In the formula A represents a C arylene group or the like R R and R each independently represents a hydrogen atom a halogen atom a C alkyl group a C alkoxy group or the like R represents an optionally substituted C aryl group an optionally substituted 5 12 membered monocyclic or polycyclic heteroaryl group an optionally substituted C aralkyl group or the like m represents 0 or the like and n represents an integer of 0 2.)