Center for Structural Chemistry, School of Pharmacy, University of London, London, United Kingdom.|Center for Structural Chemistry, School of Pharmacy, University of London, London, United Kingdom.|Center for Structural Chemistry, School of Pharmacy, University of London, London, United Kingdom.|Center for Structural Chemistry, School of Pharmacy, University of London, London, United Kingdom.|Center for Structural Chemistry, School of Pharmacy, University of London, London, United Kingdom.