Figure 10. The mass spectra of peak 2, 5 and 8.
(a). EIC of m/z 690; (b1). MS2 of peak 2; (b2). MS3 of peak 2; (c1). MS2 of peak 5; (c2). MS3 of peak 5; (d1). MS2 of peak 8; (d2). MS3 of peak 8.
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