The stardust is a given. As for sunlight, all the energy including somewhat arguably geothermal (using the suns gravity to help form the earth and I guess radioactive material being formed by other stars) comes from the sun and gets converted into chemical energy you eat so you’re stardust animated by sunlight (mainly).
Also we’re chemical compounds, eating chemical compounds to produce more chemical compounds fighting off other chamical compounds to prevent them from converting our chemical compounds into their chemical compounds.
This is the meaning of life BTW