Oryzalexin A

ent-3β-Hydroxy-8(14),15-isopimaradien-7-one

(2R)-7β-Ethenyl-2,3,4,4a,4bβ,5,6,7,10,10aβ-decahydro-2α-hydroxy-1,1,4aα,7-tetramethyl-9(1H)-phenanthrenone