All samples were analysed using the same acquisition and processing parameters. Fractions were dried under vacuum, and aliquots (up to about 20 mg when possible) of CPC fractions were dissolved in 600 μl DMSO-d6 and analysed by nuclear magnetic resonance ( 1 H, 13 C, HSQC, HMBC, and COSY) at 298 K on a Bruker Avance AVIII-600 spectrometer (Karlsruhe, Germany) equipped with a TCI cryoprobe. 13 C NMR spectra were acquired at 150.91 MHz using a standard udeft pulse sequence with an FID acquisition time of 0.36 s, a relaxation delay of 3.00 s, and the accumulation of 1,024 scans.