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1H (600.17 MHz) MAS (a), 13C (100.63 MHz) CPMAS (b) and 15N (40.56 MHz) CPMAS (c) spectra of DNic acquired at room temperature at a spinning speed of 60 kHz for 1H, 12 kHz for 13C and 9 kHz for 15N, respectively. Signals assignments refer to Scheme 1.
