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The product-ion spectra of the [M − 15]− ion at m/z 744 (A), the [M − 60]− ion at m/z 699 (B), and of the [M − 86]− ion at m/z 673 (C). These precursor ions were generated from 16:0/18:1-PC by ESI in the presence of CF3CO2− in negative-ion mode.