5 6 7 7a-tetrahydro-3 6-dimethylbenzofuran-2 (4h)-one July 8, 2019 16 32 64 128 2(4h)-benzofuranone 5 6 7 7a-tetrahydro-4 4 7a-trimethyl- (r)- 5 6 7 7a-tetrahydro-4 4 7a-trimethyl-2(4h)-benzofuranone 8-ethyl-4 6 6 8-tetramethyl-3 4 6 7-tetrahydro-1h-cyclopenta(g)-2-benzopyran
