dodecanyl 4-O-acetyl-2,3-O-isopropylidene-α-L-rhamnopyranosyl-(1->3)-2,4-di-O-acetyl-α-L-rhamnopyranosyl-(1->3)-4-O-acetyl-α-L-rhamnopyranosyl-(1->4)-2,3-O-isopropylidene-α-L-rhamnopyranoside