Considering both the molecular ion [M]+ at m/z 743 and fragment ions at m/z 581 (loss of 162u, a glucose), 449 (loss of 294u, a glucose + a xylose), and 287 (loss of 456u, a glucose + a xylose + a glucose), we identified the peak a11 as cyanidin 3-sambubioside-5-glucoside