A compound that is 5 - ((E) - (3-fluorodibenzo [b, e] oxepin-11 (6H) -ylidene) methyl) -1 - ((7R, 8aR) -hexahydro-1Hpyrrolo [2,1-c ] [1,4] oxazin-7-yl) -1H-benzo [d] imidazol-2 (3H) -one, or a pharmaceutically acceptable salt thereof.Un compuesto que es 5-((E)-(3-fluorodibenzo[b,e]oxepin-11(6H)-ilideno)metil)-1-((7R,8aR)-hexahidro-1Hpirrolo[ 2,1-c][1,4]oxazin-7-il)-1H-benzo[d]imidazol-2(3H)-ona, o una sal farmacéuticamente aceptable de la misma.