Fig. 2: NMR spectra of LEP20 and LEP50.

NMR spectra of LEP20 (A–G) and LEP50 (I–O) acquired at 70 °C, including.¹H NMR (A, I), ¹³C NMR (B, J), COZY (C, K), TOCSY (D, L), HSQC (E, M), HMBC (F, N), NOESY (G, O), and the structural repeating units of the LEP20 (H) and LEP50 (P).