Oryzalexin C

ent-8(14),15-Isopimaradiene-3,7-dione

(4aR)-7β-Ethenyl-4,4a,4bβ,5,6,7,10,10aβ-octahydro-1,1,4aα,7-tetramethyl-2,9(1H,3H)-phenanthrenedione