Duh. It's algebra. Didn't you know that?!
photosynthesis materials aka H20 CO2 ( water and carbon dioxide)
It depends on the life stage that the star is in. Currently, in the mid-life stage, the sun is still fusing hydrogen into helium, so the maximum here is helium; however, far in the future when the star is nearing its final days, it can fuse atoms into elements as heavy as iron and nickel.
