Hexadecanoic acid, 11-((O-6-deoxy-4-O-(2-methyl-1-oxopropyl)-alpha-L-mannopyranosyl-(1-4)-O-6-deoxy-3-O-(2-methyl-1-oxopropyl)-alpha-L-mannopyranosyl-(1-4)-O-6-deoxy-alpha-L-mannopyranosyl-(1-4)-6-deoxy-alpha-L-mannopyranosyl))