Complex sentence: Its busiest section is São Paulo-Campinas, the first section which was inaugurated, it is 86 km long, and serves the cities of Cajamar, Jundiai, Louveira, Vinhedo, Valinhos and Campínas.
Split into simpler sentences: Its busiest section is São Paulo-Campinas, the first section which was inaugurated. It iss 86 km long, and serves the cities of Cajamar, Jundiai, Louveira, Vinhedo, Valinhos and Campínas.