1. Institute
of Pharmaceutical Sciences, Department of Chemistry and Applied Biosciences, ETH Zurich, Vladimir-Prelog-Weg 1-5/10, 8093 Zurich, Switzerland
2. Department
of Pharmacology and Therapeutics, McGill University, 3655 Prom. Sir-William-Osler, Montréal, Québec H3G 1Y6, Canada