N-((3R)-1-((6-fluoro-2-naphthyl)methyl)pyrrolidin-3-yl)-2-(1-((5-hydroxy-3-methylpyridin-2-yl)carbonyl)piperidin-4-ylidene)-acetamide hemifumarate
n-((3r)-1-((6-fluoro-2-naphthyl)methyl)pyrrolidin-3-yl)-2-(1-((5-hydroxy-3-methylpyridin-2-yl)carbonyl)piperidin-4-ylidene)-acetamide hemifumarate