(-)-Dehydrocostus lactone477-43-0100 % similar Parthenolide20554-84-141 % similar Costunolide553-21-938 % similar (+)-Isoalantolactone470-17-736 % similar Arglabin84692-91-136 % similar Cynaropicrin35730-78-036 % similar Carabron1748-81-833 % similar (-)-Xanthatin26791-73-130 % similar