4-21-00-06538 (Beilstein Handbook Reference) 509-24-0 7,20-Cycloveatchan-12-one, 21-ethyl-1,15-dihydroxy-4-methyl-16-methylene, (1alpha,15beta)- BRN 0045107 Bullatine Napellonine Songorin Songorine Xuan-Wu 2 Zongorine