*4.10. Nuclear Magnetic Resonance Spectroscopy*

In total, 20 mg of the sample was dissolved in 0.5 mL D2O. NMR spectra were recorded on an Ascend 400: 1H NMR – 400 MHz, 13C NMR – 100 MHz (Bruker, Billerica, MA, USA). Chemical shifts are reported in parts per million relative to the solvent resonance signal as an internal standard.
