A polymorphic form of a compound having the formula: ** Formula ** in which the polymorphic form is crystalline, which has a powder X-ray diffraction pattern (CuKα) comprising peaks at approximately 10,601, 11,638, 12,121, 13,021, 13,435, 15,418, 15,760, 17,830, 18,753 and 19,671 ° 2θ, in which the term "approximately" means +/- 0.2 ° 2θ.Una forma polimórfica de un compuesto que tiene la fórmula:**Fórmula** en la que la forma polimórfica es cristalina, que tiene un patrón de difracción de rayos X de polvo (CuKα) que comprende picos en aproximadamente 10,601, 11,638, 12,121, 13,021, 13,435, 15,418, 15,760, 17,830, 18,753 y 19,671º 2θ, en la que el término "aproximadamente" significa +/- 0,2º 2θ.