You're almost there! Here's the corrected version of your statement:

Photosynthesis uses the energy of sunlight to convert water and carbon dioxide into oxygen and high-energy sugars.

Here's why the correction is important:

* Oxygen is a product, not a source of energy: Photosynthesis produces oxygen as a byproduct, not as a way to store energy.

* Sugars are the energy storage: The primary energy-rich product of photosynthesis is glucose, a type of sugar. This sugar is used by the plant for growth, reproduction, and other life processes.

Let me know if you have any more questions about photosynthesis!