spiro,cyclopentane,isobenzofuran,benzofuran,furan
Furan
157744-23-55H-Dicyclopenta[b,c]furan-3a(1H)-ol,hexahydro-3,5,5,8-tetramethyl-, [3S-(3a,3aa,5ab,8b,8aR*)]- 114763-53-0Spiro[cyclodeca[b]furan-2(3H),2'(3'H)-furan],3a,4,4',5,5',8,9,11a-octahydro-3,5',5',6,10-pentamethyl-,(2R*,3R*,3aR*,6E,10E,11aR*)-