(1S,3R,4R,4aS,16aR)-8,9,10,11,12,13-hexamethoxy-6,15-dioxo-3-(((3,4,5-trimethoxybenzoyl)oxy)methyl)-3,4,4a,6,15,16a-hexahydro-1H-dibenzo[f,h]pyrano[3,4-b][1,4]dioxecine-1,4-diyl bis(3,4,5-trimethoxybenzoate)