Sorry I am not sure I get it.derive the put call parity through the futures that way you don't need interest rates of dividends since they are allready priced into the futures
I am not doing this in the hope to find arbitrages. I have a more practical need: I want to minimize the numbers of quotes I retrieve from markets.ah, sorry this detail escaped me. Nope you can't derive it from the June futures. However intrest rates should play a minimal part nowadays. look at several strikes and you'll will have a theoretical future of may so you will know the dividends that will arrive before that time.
But you are way overthinking this ... there is nor practical use for what you are aiming to do, rest assured the market makes have things very much in line.