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Cleavage mechanism of the glycosidic bond according to the literature [25], and the fragmentation scheme proposed herein for the loss of Dau moiety by the breakage of the oxime bond. Corresponding neutral fragments formed upon the cleavages of the glycosidic or oxime bonds are present but are not depicted for the ease of readability. Neutral losses are marked as follows: * = sugar, ° = H2O, # = Dau + sugar.
