1. Department of Chemistry, Royal College of Surgeons in Ireland, Dublin D02 YN77, Ireland
2. SSPC, The Science Foundation Ireland Research Centre for Pharmaceuticals, Limerick V94 T9PX, Ireland
3. Department of Chemistry and Biochemistry, University of Oregon, Eugene, Oregon 97403, United States
4. Life Science Institute, Dublin City University, Dublin D09 V209, Ireland
5. Department of Chemistry, Trinity College Dublin, Dublin D02 PN40, Ireland