4.
Name: Butanoic acid,2-methyl-,(1R,2S,3R,4aR,5S,6R,- 8S,8aR)-8-(acetyloxy)-8a-[(acetyloxy)methyl]- octahydro-3-hydroxy-5,6-dimethyl-5-[(2S,- 3aS,6aS)-2,3,3a,6a-tetrahydrofuro[2,3-b]- furan-2-yl]spiro[naphthalene-1(2H),2'- oxiran]-2-yl ester
CAS: 122622-16-6



5.
Name: 2H-Cyclohepta[b]furan-2-one,3,3a,4,5,6,8ahexahydro- 5-hydroxy-6-methyl-3-methylene- 7-(3-oxobutyl)-,(3aS,5R,6R,8aS)-
CAS: 37163-90-9


