8H‐Indeno[1,2‐d]oxazole, 2,2′‐methylenebis[3a, 8a‐dihydro‐, (3aR, 3′aR, 8aS, 8′aS)] and 8H‐Indeno[1,2‐d]oxazole, 2,2′‐methylenebis[3a, 8a‐dihydro‐, (3aS, 3′aS, 8aR, 8′aR)]