115021-83-5

(2aE,3'R,4E,5'S,6R,6'S,8E,11R,13S,15S,20R,20aR,20bS)-3',20,20b-trihydroxy-5',6,8,19-tetramethyl-6'-[(1E)-1-methylprop-1-en-1-yl]-3',4',5',6,6',7,10,11,14,15,17a,20,20a,20b-tetradecahydro-2H,17H-spiro[11,15-methanofuro[4,3,2-pq][2,6]benzodioxacyclooctadeci