1. Department of Chemical Engineering, Massachusetts Institute of Technology, Cambridge, Massachusetts 02139, Supratek Pharma, Inc., 531 Boulevard des Prairies, Building 18, Laval, Québec, Canada H7V 1B7, and Departamento de Farmacia y Tecnología Farmacéutica, Facultad de Farmacia, Universidad de Santiago de Compostela, 15872 Santiago de Compostela, Spain