Hexadecanoic acid, 11- ((O-6-deoxy-4-O-(2-methyl-1-oxopropyl)-alpha-L-mannopyranosyl-(1-4)-O-6-deoxy-2-O-(2-methyl-1-oxopropyl)-alpha-L-mannopyranosyl-(1-4)-O-6-deoxy-alpha-L-mannopyranosyl-(1-4)-6-deoxy-alpha-L-mannopyranosyl))