Showing structure for (1r,3as,5ar,5br,7as,8s,11as,11br,12r,13ar,13br)-12-hydroxy-5a,5b,8,11a-tetramethyl-9-oxo-1-(prop-1-en-2-yl)-hexadecahydrocyclopenta[a]chrysene-3a-carboxylic acid