17555-58-7 2,4-Nonadienamide, N-(4-(acetyloxy)tetrahydro-3,5-dimethyl-6-(2-oxoethyl)-2H-pyran-2-yl)-N-(6,9-dihydro-5-hydroxy-2,4-dimethyl-6,9-dioxonaphtho(2,1-b)furan-7-yl)-7-hydroxy-2,6-dimethyl-