1. Institut für Physikalische Chemie, RWTH Aachen University, 52056 Aachen, Germany and Zephyr Health Inc, 589 Howard Street, 3rd floor, San Francisco CA, USA
2. Centre for Experimental and Constructive Mathematics (CECM), Simon-Fraser University, Burnaby, BC V5A 1S6 Canada
3. Institute for Advanced Simulation, Jülich Supercomputing Centre, Forschungszentrum Jülich, 52425 Jülich, Germany