Figure 3.

A) CW-ESR spectra of mOX063-d24-GB1 (top) and mOX063-d24 (bottom). The spectrum of mOX063-d24-GB1 can be fitted with a narrow single-component simulation. The 13C satellite peaks are marked with *. B) The CW-ESR spectra of mOX063-d24-GB1 and mOX063-d24 with the observation window ~2 G at the central lineshape. The nitrogen superhyperfine is partially resolved in the mOX063-d24 spectrum but not in the mOX063-d24-GB1 spectrum.