Polymorph forms of 4-trifluoromethyl-N-(3,3a,4,4a,5,5a,6,6a-octahydro-1,3-dioxo-4,6-ethenocycloprop[f]isoindol-2(1H)-yl)-benzamide are disclosed as well as their methods of synthesis and pharmaceutical compositions.4-트라이플루오로메틸-N-(3,3a,4,4a,5,5a,6,6a-옥타하이드로-1,3-다이옥소-4,6-에테노사이클로프로프[f]아이소인돌-2(1H)-일)-벤즈아마이드의 다형체뿐만 아니라 그의 합성방법 및 약제학적 조성물이 개시된다.