1 GR4 R3-acetoxy-17-(1-formyl-5-methyl-3-oxo-hex-4-enyl)-12,16-dihydroxy-14-hydroxymethyl-4,10,13-trimethyl-2,3,4,5,6,9,10,11,12,13,14,15,16,17-tetradecahydro-1h-cyclopenta[a]phenanthrene-4-carboxylic acid idopyranosyl ester 1.000 2 GR3 3-acetoxy-17-(1-formyl-5-methyl-3-oxo-hex-4-enyl)-16-hydroxy-4,10,13,14-tetramethyl-2,3,4,5,6,9,10,11,12,13,14,15,16,17-tetradecahydro-1h-cyclopenta[a]phenanthrene-4-carboxylic acid 0.717