Trifluoro-acetic acid (4bS,8aS)-2-isopropyl-4b,8,8-trimethyl-4b,5,6,7,8,8a,9,10-octahydro-phenanthren-1-yl ester

12-amino-14-nitroabieta-8,11,13-triene

11,14-diacetoxyabieta-8,11,13-triene