<; p >; This Invention Bertalanffy refers to (2S) - 3 - [(3S, 4S) - 3 - [(1R) - 1-hydroxyethyl] - 4 - (4 - methoxy - 3 (5 - [1 - [2 - metilpiridin II) azetidin - 3 - il] oxy] phenyl) - 3 - metilpirrolidin II] - 3 - 1 - oxopropano - 1,2-diol Crystalline compositions and Pharmaceutical & eacute; Treatment of the same. The Invention & acute; S and & nbsp; provides M & eacute; All to use this Compound to treat overactive bladder. <; / p >;FORMA CRISTALINA DE (2S)-3-[(3S,4S)-3-[(1R)-1-HIDROXIETIL]-4-(4-METOXI-3-{[1-(5-METILPIRIDIN-2-IL)AZETIDIN-3-IL]OXI}FENIL)-3-METILPIRROLIDIN-1-IL]-3-OXOPROPANO-1,2-DIOL; COMPOSICIÓN FARMACÉUTICA QUE LA COMPRENDE; Y SU USO PARA EL TRATAMIENTO DE VEJIGA HIPERACTIVA.