(αR, S)-α-Hydroxy- β-[[(2E)-1-oxo-2-hexen-1-yl]amino]benzenepropanoic Acid (2aR,S,4S,6R,S,1S,1S,12aR,12S)-6,12b-BS(acetyloxy)-12-(benzoyloxy)-2a,3,4,4a,5,6,9,10,11,12,12a,12b-dodecahydro-4,11-dihydroxy-4a,8,13,13-tetramethyl-5-oxo-7,11-methano-1H-cyclodeca[3,4]benz[1,2-b]oxet-9-yl Ster; (αR, S)-α-Hydroxy- β-[[(2E)-1-oxo-2-hexenyl]amino]benzenepropanoic Acid (2aR,S,4S,6R,S,1S,1S,12aR,12S)-6,12b-BS(acetyloxy)-12-(benzoyloxy)-2a,3,4,4a,5,6,9,10,11,12