34864-30-7 CORIOLIN B, DIKETO- Diketocoriolin B NSC 163027 Octanoic acid, octahydro-3a,5,5-trimethyl-2,7-dioxospiro(cyclopenta(4,5)pentaleno(1,6a-beta)oxirene-3(3ah),2'-oxiran)-4-yl ester, (1a-alpha,3-beta,3a-beta,3b-alpha,4-alpha,6a-alpha,7ar*)-