Complex sentence: Shinsei Bank was once a bankrupt trust bank, Long-Term Credit Bank of Japan (日本長期信用銀行, "Nippon Chōki Shin'yō Ginkō"), which was bought by American investment company Ripplewood Holdings LLC, restructured and relaunched with a new management and polished up services.
Split into simpler sentences: Shinsei Bank was once a bankrupt trust bank, Long-Term Credit Bank of Japan (日本長期信用銀行, "Nippon Chōki Shin'yō Ginkō"). It was restructured and relaunched with a new management and polished up services.