The present invention provides: a compound represented by the following formula (I):[wherein Y1 and Y4 represent a hydrogen atom or a halogen atom either one of Y2 and Y3 represents -NR1R2, and the other represents a hydrogen atom or a halogen atom X represents an aryl group or a heteroaryl group that may be substituted R1 represents a hydrogen atom, or a C1-8 alkyl group that may be substituted and R2 represents a C1-8 alkyl group that is substituted with one or more substituents, - COOR3, -COR4, -COSR5, -CONR6R7, -NR22R23, or -C=NR24R25 or R1 and R2, 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.
