28387-43-1 Nigakilactone F Phenanthro(10,1-bc)pyran-5,11(1H,4H)-dione, 2,3,3abeta,6abeta,7,7aalpha,8,11a,11balpha,11c-decahydro-1alpha,3beta-dihydroxy-2beta,10-dimethoxy-3,8alpha,11abeta,11cbeta-tetramethyl-, ( )- Picras-2-ene-1,16-dione, 11,13-dihydroxy-2,12-dimethoxy-, (11alpha,12beta)-