2-O-trans-cinnamoyl-3-O-p-methoxybenzyl-4-O-n-dodecanoyl-α-L-rhamnopyranosyl-(1→4)-2-O-2(S)-methylbutyryl-3-O-(11(S)-levulinoyloxyhexadecanoyl)-α-L-rhamnopyranosyl trichloroacetimidate