Complex sentence: MSF should not be confused with Médecins du Monde (Doctors of the World), which was was formed in part by members of the former organisation, but is an entirely independent non-governmental organisation with no links to MSF today.
Split into simpler sentences: MSF should not be confused with Médecins du Monde (Doctors of the World, in English). The latter organisation was formed in part by members of the former organisation, but it is an entirely independent non-governmental organisation with no links to MSF today.