The present invention is directed to the compound 2-phenoxy)-1-phenoxy)pyrrolidin-1-yl)ethanone, its use as an inhibitor of stearoyl CoA desaturase and to pharmaceutical compositions containing this compound. Inspection of the photomask for mask defects is simplified while achieving an increase in resolution of a photomask for pattern transfer. The pouch also includes a cover comprising a sealant layer and a score layer.