- (1S,4aR,5R,8aS)-Decahydro-1,4a-dimethyl-6-methylene-5-[(1E)-3-oxo-1-buten-1-yl]-1-naphthalenecarboxylic aci/ent-14,15-Dinor-13-oxolabda-8(17),11-dien-18-oic acid,Analytical control, 97% (HPLC), 5mg