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2-Butenoic acid,2-methyl-,[(5S,6R,9R,15S)-1,5,6,7,9,10,13,15-octahydro-2,5,11-trimethoxy-3,12,16-trimethyl-1,4,7,10,13-pentaoxo-6,15-imino-4H-isoquino[3,2-b][3]benzazocin-9-yl]methylester, (2Z)- related products: