20304-48-7

(1R,3bR,5aS,6aS,7aR,10R,11aS,12aS,13aR,13bS,15aR)-3a,7a-dihydroxy-10,15a-dimethyl-8-oxo-1-(5-oxo-2,5-dihydrofuran-3-yl)icosahydro-8H,13aH-cyclopenta[7,8]phenanthro[2,3-b]pyrano[2,3-e][1,4]dioxine-13a-carbaldehyde