1. Organic Geochemistry Unit, School of Chemistry, University of Bristol, Cantock’s
Close, Bristol BS8 1TS, U.K.
2. Bristol Radiocarbon Accelerator Mass Spectrometer, University of Bristol, 43 Woodland Road, Bristol BS8 1UU, U.K.
3. School of Chemistry, University of Bristol, Cantock’s Close, Bristol BS8 1TS, U.K.
4. BrisSynBio, Life Sciences, University of Bristol, Tyndall Avenue, Bristol BS8 1TQ, U.K.