A compound represented by the formula (I) or a salt thereof: ** Formula ** (in which R1 is H or C1-6 alkyl which may be substituted with halogen, R2 is halogen, R3 and R4 are the same or different each other, and are H or halogen, m is 0, 1, 2, 3 or 4, Y1 and Y2 are N, X is Z- (CR11R12) n-, n is 0, Z is ** Formula ** R21, R22, R23, R24, R25 and R26 are H, Y4 is N or CRY41, Y5 is N or CRY51, RY41, RY51 and RG32 are H, halogen, -OH, -C 1-6 alkyl (in which the C1- alkyl 6 may be substituted with 1 to 3 OH, halogen, -O-C1-6 alkyl groups (in which the C1-6 alkyl may be substituted with one or more -COOH groups) or aryl), -CHO, -CO- C1-6 alkyl (in which C1-6 alkyl may be substituted with 1 to 3 halogen atoms), -CO-cycloalkyl (in which cycloalkyl may be substituted with one or more -O-C1-6 alkyl groups) , -CO-aryl, a group of saturated heterocyclic -CO monocyclic, cyano, -COOH, -COO-C 1-6 alkyl (in which the C 1-6 alkyl may be substituted with 1 to 3 a halogen atoms), C1-6 alkyl which may be substituted with -COOH or -O-C1-6 alkyl or C2-6 alkenyl which may be substituted with -COOH or -O-C1-6 alkyl, and s is 0.1 , 2 or 3).Un compuesto representado por la fórmula (I) o una sal del mismo:**Fórmula** (en la que R1 es H o alquilo C1-6 que puede estar sustituido con halógeno, R2 es halógeno, R3 y R4 son iguales o diferentes entre sí, y son H o halógeno, m es 0, 1, 2, 3 o 4, Y1 e Y2 son N, X es Z-(CR11R12)n-, n es 0, Z es**Fórmula** R21, R22, R23, R24, R25 y R26 son H, Y4 es N o CRY41, Y5 es N o CRY51, RY41, RY51 y RG32 son H, halógeno, -OH, -Oalquilo C1-6 (en el que el alquilo C1-6 puede estar sustituido con 1 a 3 grupos OH, halógeno, -O-alquilo C1-6 (en el que el alquilo C1-6 puede estar sustituido con uno o más grupos -COOH) o arilo), -CHO, -CO-alquilo C1-6 (en el que el alquilo C1-6 puede estar sustituido con 1 a 3 átomos de halógeno), -CO-cicloalquilo (en el que cicloalquilo puede estar sustituido con uno o más grupos -O-alquilo C1-6), -CO-arilo, un grupo de hetero anillo s
