Fructose-1,6-bisphosphate
The molecular formula of Fructose-1,6-Bisphosphate is C6H14O12P2 and it is used in the metabolism of fructose and mannose (National Center for Biotechnology Information).
Reference
National Center for Biotechnology Information. PubChem Compound Database; CID=10267, Available at: https://pubchem.ncbi.nlm.nih.gov/compound/10267 (Accessed: Oct. 22, 2015)