Complex sentence: Its final orthodox Catholic defender was Miguel de Molinos, referred to by the "Catholic Encyclopedia" as the "founder" of Quietism, finally condemned by Pope Innocent XI in the Bull "Coelestis Pastor" of 1687.
Split into simpler sentences: Its final orthodox Catholic defender was Miguel de Molinos, referred to by the "Catholic Encyclopedia" as the "founder" of Quietism. Molinos and the doctrines of Quietism were finally condemned by Pope Innocent XI in the Bull "Coelestis Pastor" of 1687.