11-((O-6-deoxy-4-O-2-methyl-1-oxo-2-butenyl)glucopyranosyl-(1-4)-O-6-deoxy-2-O-(2-methyl-1-oxobutyl)-mannopyranosyl-(1-2)-O-glucopyranosyl-(1-2)-6-deoxyglucopyranosyl)oxy-11-hydroxyhexadecanoic acid, intramol 1,3'''-ester