155660-91-6 2H-Pyran-2-acetamide, tetrahydro-6-(2-hydroxy-3-pentenyl)-N-(2-hydroxy-4-((3-(8-(6-hydroxy-3,5-dimethyl-4-heptenyl)-3-methyl-1,7-dioxaspiro(5.5)undec-2-yl)propyl)amino)-3-methyl-4-oxobutyl)-4-methyl- Bistramide D Bistramide K