rac-(3R,3aR,5S,6aS,10aR)-3a,8-dimethyl-4-methylene-3,3a,4,5,6a,9-hexahydro-1H,10H-3,5-methanofuro[3,4-d]chromen-1-one

Propionic acid (1S,2R,7R,9R,11R)-2-hydroxymethyl-1,5-dimethyl-12-methylene-8-oxa-tricyclo[7.2.1.02,7]dodec-5-en-11-yl ester

rac-(1aR,3aR,4S,5R,7R,8aS,8bS)-3a-(((tert-butyldimethylsilyl)oxy)methyl)-1a,4-dimethyl-9-methylenedecahydro-4,7-methanooxireno[2',3':5,6]benzo[1,2-b]oxepin-5-ol