ISODONAL; oridonin; rubescensin A; (1alpha,5beta,6beta,9beta,14S)-1,6,7,14-tetrahydroxy-7,20-epoxykaur-16-en-15-one; (1alpha,5beta,6beta,7beta,9xi,10xi,14S)-1,6,7,14-tetrahydroxy-7,20-epoxykaur-16-en-15-one; (1alpha,5beta,6beta,7beta,8alpha,9beta,10alpha,13alpha,14R)-1,6,7,14-tetrahydroxy-7,20-epoxykaur-16-en-15-one; (6beta,7beta)-1,6,7,14-tetrahydroxy-7,20-epoxykaur-16-en-15-one