* Corresponding authors

^a Department of Chemistry, University of Canterbury, Christchurch, New Zealand
E-mail: john.blunt@canterbury.ac.nz

^b School of Chemical Sciences, University of Auckland, Auckland, New Zealand

^c Centre for Biodiscovery, and School of Chemical and Physical Sciences, Victoria University of Wellington, Wellington, New Zealand

^d Chemistry, School of Science, University of Waikato, Hamilton, New Zealand