Showing structure for n-[(1r,4r,4ar,8as)-4-[(2s,5r)-5-(2-isocyanopropan-2-yl)-2-methyloxolan-2-yl]-1,6-dimethyl-3,4,4a,7,8,8a-hexahydro-2h-naphthalen-1-yl]carboximidic acid