2-[(4aR,4bS,5S,6aS,6bS,9aR,10aS,10bS)-5-hydroxy-4a,6a-dimethyl-2-oxo-8-propyl-4a,4b,5,6,6a,6b,9a,10,10a,10b,11,12-dodecahydro-2H-phenanthro[1',2':1,2]cyclopenta[3,4-d][1,3]dioxol-6b-yl]-2-oxoacetaldehyde (4aR,4bS,5S,6aS,6bS,9aR,10aS,10bS)-6b-(2,2-dihydroxyacetyl)-5-hydroxy-4a,6a-dimethyl-8-propyl-4a,4b,5,6,6a,6b,9a,10,10a,10b,11,12-dodecahydro-2H-phenanthro[1',2':1,2]cyclopenta[3,4-d][1,3]dioxol-2-one