2 4 5 6 7 7a hexahydro 1h indene July 8, 2019 16 32 64 128 1h-indene 2 3 3a 4 7 7a-hexahydro-2 2 4 4 7 7-hexamethyl- (4r 4ar 5as 6s)-4 4a 5 5a 6 6a-hexahydro-1h-4 6-ethenocyclopropa f isobenzofuran-1 3(3ah)-dione 2 4-hexadienal (e e)- 2 4-hexadiene
