6CO₂ + 6H₂O → C₆H₁₂O₆ + 6O₂

This means:

* 6 molecules of carbon dioxide (CO₂) + 6 molecules of water (H₂O)

* produce 1 molecule of glucose (C₆H₁₂O₆) + 6 molecules of oxygen (O₂)

So, the product that is not part of the general photosynthesis equation is water (H₂O).

Water is a reactant in photosynthesis, meaning it is used up in the process.