The present invention provides: a compound represented by the following formula (I): [wherein Y 1 and Y 4 represent a hydrogen atom or a halogen atom； either one of Y 2 and Y 3 represents -NR 1 R 2 , and the other represents a hydrogen atom or a halogen atom； X represents an aryl group or a heteroaryl group that may be substituted； R 1 represents a hydrogen atom, or a C 1-8 alkyl group that may be substituted； and R 2 represents a C 1-8 alkyl group that is substituted with one or more substituents, - COOR 3 , -COR 4 , -COSR 5 , -CONR 6 R 7 , -NR 22 R 23 , or -C=NR 24 R 25 ； or R 1 and R 2 , together with a nitrogen atom to which they are bonded, may form a 4- to 10-membered hetero ring containing at least one nitrogen atom (wherein the hetero ring may be substituted with one or more substituents selected from Group C)], a prodrug thereof, or a pharmaceutically acceptable salt thereof； and a pharmaceutical, a pharmaceutical composition, or the like, which comprises the compound.
