A compound of formula (I) or a salt thereof: ** Formula ** (wherein R 1 represents piperazinyl which is substituted with C 1 -C 6 alkyl, piperidinyl which is substituted with C 1 -C 6 alkyl, or piperidinyl substituted with piperazinyl which can being substituted with C1-C6 alkyl, Ring A represents benzene which may be substituted with one or more substituents selected from the group consisting of halogen, C1-C6 alkyl which may be substituted with one or more halogen atoms, and -O- C1-C6 alkyl, pyrazole which may be substituted with C1-C6 alkyl, imidazole which may be substituted with C1-C6 alkyl or pyrimidine which may be substituted with C1-C6 alkyl, L1 represents NH-, R2 represents H or C1- alkyl C6, L2 represents -O- or a bond, Y represents Ring X, ring X represents an aromatic heterocycle, a non-aromatic heterocycle, cycloalkane, or benzene that may be substituted with one or more substituents selected from the group consisting of halogen , -O C1-C6 alkyl, -CN, cycloalkyl, aryl, aromatic heterocyclic group, non-aromatic heterocyclic group which may be substituted with C1-C6 alkyl, oxo, and C1-C6 alkyl which may be substituted with one or more halogen atoms , L3 represents -NH-, -N (C1-C6 alkyl) - or a bond, M represents -C (O), R3 represents H, R4 represents H).Un compuesto de fórmula (I) o una de sus sales:**Fórmula** (en donde R1 representa piperazinilo que está sustituido con alquilo C1-C6, piperidinilo que está sustituido con alquilo C1-C6, o piperidinilo sustituido con piperazinilo que puede estar sustituido con alquilo C1-C6, el Anillo A representa benceno que puede estar sustituido con uno o más sustituyentes seleccionados del grupo que consiste en halógeno, alquilo C1-C6 que puede estar sustituido con uno o más átomos de halógeno, y -O-alquilo C1-C6, pirazol que puede estar sustituido con alquilo C1-C6, imidazol que puede estar sustituido con alquilo C1-C6 o pirimidina que puede estar sustituida con alquilo C1-C6, L1 representa NH-, R2 representa H o alq
