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

(1S,2R,7R,9R,11R)-2-(tert-Butyl-dimethyl-silanyloxymethyl)-1,5-dimethyl-12-methylene-8-oxa-tricyclo[7.2.1.02,7]dodec-5-en-11-ol