A compound that is: N- [2- {4- [6-amino-5- (2,4-difluorobenzoyl) -2-oxopyridin-1 (2H) -yl] -3,5-difluorophenyl} ethyl) -L tert-butyl alaninate, or a pharmaceutically acceptable salt, hydrate or solvate thereof.Un compuesto que es: N-[2-{4-[6-amino-5-(2,4-difluorobenzoil)-2-oxopiridin-1(2H)-il]-3,5-difluorofenil}etil)-L-alaninato de terc-butilo, o una sal, hidrato o solvato farmacéuticamente aceptable del mismo.