1. School of Chemical Sciences and Pharmacy, The University of East Anglia, Norwich, NR4 7TJ, UK
2. Department of Chemistry, University of Nanchang, 235 Nanjing Dong Lu, Nanchang 320047, Jiangxi, China
3. Department of Chemistry, South China University of Technology, Guangzhou 510640, China
4. Department of Oncology, Norwich and Norfolk University Hospital, Norwich, NR4 7UY, UK
5. Chemistry Department, Loughborough University, Loughborough, Leicestershire, LE11 7RU, UK