160796-24-7 D-Homo-C,30-dinor-13,17a-secodammara-14,16,17a(20),22,24-pentaen-26-oic acid, 22-hydroxy-15-methyl-3,13-dioxo-, delta-lactone, (8alpha,9beta,14E,16E,17aE)- Stellettin A