Patent ID: 8802679

Claim:
A compound represented by the formula (I) or a salt thereof: wherein R 1 is H or lower alkyl which may be substituted with halogen, R 2 is halogen, R 3 and R 4 are the same as or different from each other, and are H or halogen, m is 0, 1, 2, 3, or 4, Y 1 and Y 2 are both N, X is Z—, Z is R 21 , R 22 , R 23 , R 24 , R 25 and R 26 are H, Y 4 is N or CR Y41 , Y 5 is N or CR Y51 , R Y41 , R Y51 , and R G32 are H, halogen, —OH, —O-lower alkyl (in which the lower alkyl may be substituted with 1 to 3 OH, halogen, —O-lower alkyl (in which the lower alkyl may be substituted with one or more —COOH groups), or aryl groups), —CHO, —CO-lower alkyl (in which the lower alkyl may be substituted with 1 to 3 halogen atoms), —CO-cycloalkyl (in which cycloalkyl may be substituted with one or more —O-lower alkyl groups), —CO-aryl, a —CO-monocyclic saturated hetero ring group, cyano, —COOH, —COO-lower alkyl (in which the lower alkyl may be substituted with 1 to 3 halogen atoms), lower alkyl which may be substituted with —COOH or —O-lower alkyl, or lower alkenyl which may be substituted with —COOH or —O-lower alkyl, and s is 0, 1, 2, or 3.