1. Chemistry, School of Natural and Environmental Sciences, Newcastle University, Bedson Building, Newcastle upon Tyne, NE1 7RU, UK
2. Cancer Research Horizons Newcastle Drug Discovery Unit, Chemistry, School of Natural and Environmental Sciences, Newcastle University, Bedson Building, Newcastle upon Tyne, NE1 7RU, UK
3. Cancer Research Horizons Therapeutic Innovation, Jonas Webb Building, Babraham Research Campus, Cambridge, CB22 3AT, UK