Compound 33

4,5-Bis(benzyloxy)-2-((14-(benzyloxy)-1,3,13,15-tetrakis(methoxymethoxy)-5,11-dioxo-5,8,9,11-tetrahydro-7H-dibenzo[g,i][1,5]dioxacycloundecin-2-yl)oxy)-3-hydroxybenzaldehyde

From: A unified strategy for the synthesis of highly oxygenated diaryl ethers featured in ellagitannins