Complex sentence: A heavily upgraded version of the AL-31F was developed for the Sukhoi Su-35 (Izdeliye 117S/AL-41F1S) and is being developed for the Sukhoi Su-57 (Izdeliye 30).
Split into simpler sentences: A heavily upgraded version of the AL-31F was developed for the Sukhoi Su-35 and is being developed also for the Sukhoi Su-57. These engines has been named (Izdeliye 117S/AL-41F1S) and (Izdeliye 30).