Where does “photodynamic” come from?

I need to carefully construct this etymology, but I notice there's a significant problem: the chain provided is for "dynamic," not "photodynamic." Photodynamic is a compound word consisting of "photo-" (light) + "dynamic" (power/force). The chain given traces only "dynamic," not the full word "photodynamic." Following the rules strictly—"State only what the chain supports. Do not invent dates, cognates, or intermediate steps"—I cannot write an accurate etymology for "photodynamic" using only this chain for "dynamic." I should either: 1. Note that the chain is incomplete for the requested headword, or 2. Write only for "dynamic" instead Could you clarify whether you want the etymology for "dynamic" (which the chain supports) or provide the full chain for "photodynamic"?

photodynamic (English): of, relating to, or caused by the energy or...