Provided is a compound as represented by formula [I] [in which n indicates 1 or 2], formula [II] or [IIh], or formula [III], or a pharmaceutically acceptable salt thereof. Also provided are medicinal uses for the compound or the salt thereof.Un compuesto representado por la siguiente fórmula (ver Fórmula) donde n es 1 o 2, (ver Fórmulas) o una de sus sales farmacéuticamente aceptables, y un uso farmacéutico de éstos.