1403-73-2 3650-17-7 Cyclopenta(4,5)pentaleno(1,6a-b)oxirene-5-carboxylic acid, decahydro-2-hydroxy-3a,5-dimethyl-3-methylene-, (1aR-(1aalpha,2beta,3abeta,3balpha,5alpha,6aalpha,7aS*))- Hirsutic Acid C