Complex sentence: The current Fred Olsen has been called "The Norwegian Howard Hughes" for his great wealth and avoidance of publicity; although a recluse he is also reputed to look like The Simpsons cartoon character Montgomery Burns.
Split into simpler sentences: The current Fred Olsen has been called "The Norwegian Howard Hughes" for his great wealth and avoidance of publicity. Although a recluse, the present Fred Olsen is reputed to look like The Simpsons cartoon character Montgomery Burns.