1. Department of Chemistry, Molecular Sciences Research Hub, Imperial College London, Shepherd's Bush, London, W12 0BZ, UK
2. Institute of Chemical Biology, Molecular Sciences Research Hub, Imperial College London, Shepherd's Bush, London, W12 0BZ, UK
3. Syngenta, Jealott's Hill International Research Centre, Bracknell, Berkshire, RG42 6EY, UK
4. Medicinal Chemistry, GlaxoSmithKline, Stevenage, SG1 2NY, UK