Figure 4

Negative-ion MALDI-QIT-TOF MS2 spectrum of parent peak at m/z 1616.27 (A) and fragment structures corresponding to each fragment ion peak were drawn as neutral molecules (B).

Negative-ion MALDI-QIT-TOF MS2 spectrum of parent peak at m/z 1616.27 (A) and fragment structures corresponding to each fragment ion peak were drawn as neutral molecules (B).