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MS/MS analysis of MCLR (a), MCRR (b), and the identified electrophilic addition products MCLR-GSH (c) and MCRR-GSH (d). Conditions: m/z signals at 995.5557, 519.7903, 1302.8792, and 673.4521 correspond to the precursor ions of MCLR, MCRR, MCLR-GSH, and MCRR-GSH, respectively.
