Complex sentence: He therefore arranges for Anarkali's secret escape into exile with her mother, but demands that they are to live in obscurity, and that Salim is never to know that Anarkali is still alive.
Split into simpler sentences: He therefore arranges for Anarkali's secret escape with her mother into exile. But he stipulates that they are to live in obscurity, and that Salim is never to know that Anarkali is still alive.