(3aS,3a'S,8aR,8a'R)-2,2'-(ethane-1,1-diyl)bis(3a,8a-dihydro-8H-indeno[1,2-d]oxazole)

(3aS,3a'S,8aR,8a'R)-2,2'-(1-((S)-4-(tert-butyl)-4,5-dihydrooxazol-2-yl)propane-2,2-diyl)bis(3a,8a-dihydro-8H-indeno[1,2-d]oxazole)