2-Butenoic acid, 2-methyl-,(1R,2S)-2-[(2R,3S)-2-hydroxy-2-methyl-3-[[(2Z)-2-methyl-1-oxo-2-buten-1-yl]oxy]-1-oxobutoxy]-1-(7-methoxy-1,3-benzodioxol-5-yl)propyl ester,(2Z)- [ 920758-09-4 ]