Complex sentence: Several of the company's subsidiaries subsequently went insolvent, including its Brazilian and American operations and its football club in Parma, before Parmalat sued several multi-national banks for huge sums of money.
Split into simpler sentences: Several of the company's subsidiaries subsequently went insolvent, including its Brazilian and American operations and its football club in Parma. Parmalat then sued several multi-national banks for huge sums of money.