The following three major peaks at 7.18, 7.83 and 8.42 min were
all identified as kaempferol derivatives because of their aglycone
fragment ions at m/z 285.03, and their kmax at 345–350 nm. Peak
at 7.18 min showed a precursor ion at m/z 725.19 (M–H)
(C32H38O19) and its MS/MS spectrum showed product ions at m/z
285.03, 447.85 and 593.09.