Jan Baptist von Helmont is credited with repudiating the idea that trees gain their mass from the soil. In an experiment carried out in 1648, he grew a willow tree in a pot with the amount of soil kept constant. After five years the tree had gained roughly 74 kg. Although von Helmont concluded the weight gain was from water rather than soil, we now know it was from CO₂ and H₂O taken in through photosynthesis. Use C₆H₁₂O₆ as a representative formula for the carbohydrates produced and write a simplified equation for the overall process of photosynthesis.