bistratene A

Bis A, Bistramide A, Tetrahydro-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]-3-methyl-6-(2-oxo-3-pentenyl)-2H-pyran-2-acetamide