Fig. 1

a Full 1H NMR spectrum of the EtOH:water (80:20) C. caudatus extract. b Expanded 1H NMR spectrum in the range of δ 5.0 to 8.5. c Expanded 1H NMR spectrum in the range of δ 1.0 to 4.5. Key to metabolites: 1 – quercetin derivatives; 2 - rutin; 3 - chlorogenic acid; 4 - proline; 5 - fatty acid; 6 - acetic acid; 7 – catechin