(2E,4E)-6-[(2S,4R,5R,6R)-6-((5E,11E)-(1R,4S,8R,10R,14S,15R,16S,17S)-14,16-Dihydroxy-4,10-dimethoxy-1,5,8,15,17-pentamethyl-18-triisopropylsilanyloxy-octadeca-5,11-dienyl)-2-(4-methoxy-phenyl)-5-methyl-[1,3]dioxan-4-yl]-hexa-2,4-dienoic acid

(3E,5E,13E,19E)-(1R,9S,10R,11S,15R,17R,21S,24R,25R,27S,29R)-11-Hydroxy-15,21-dimethoxy-27-(4-methoxy-phenyl)-10,17,20,24,29-pentamethyl-9-((S)-1-methyl-2-triisopropylsilanyloxy-ethyl)-8,26,28-trioxa-bicyclo[23.3.1]nonacosa-3,5,13,19-tetraen-7-one