Showing structure for (3s,4ar,6ar,7r,8r,10ar,10bs,12as)-8-(1-methoxy-2-methyl-1-oxopropan-2-yl)-3,7,10a,10b,12a-pentamethyl-7-(2-oxoethyl)-2,4,4a,6,6a,8,9,10,11,12-decahydro-1h-chrysene-3-carboxylic acid