Triphosphate refers to a molecule containing three phosphate groups (PO₄³⁻). The formula for triphosphate depends on the specific molecule it is attached to.

For example:

* Adenosine triphosphate (ATP) is a crucial energy carrier in cells and its formula is C₁₀H₁₆N₅O₁₃P₃.

* Guanosine triphosphate (GTP) is another important molecule involved in cellular processes, with the formula C₁₀H₁₆N₅O₁₄P₃.

If you can specify the molecule to which the triphosphate group is attached, I can provide a more precise formula.