for the following products
(-)-2,2'-Methylene-bis-(3a,8a-dihydro-8H-indeno(1,2-d)oxazole) | [3aS-[2(3'aR*,8'aS*),3'aalpha,8'aalpha]]-(-)-2,2'-Methylenebis[3a,8a-dihydro-8H-indeno[1,2-d]oxazole] and (-)-2,2'-Methylenebis[(3aS,8aR)-3a,8a-dihydro-8H-indeno[1,2-d]oxazole]
