Similarly, at retention times 12.56 and 14.24 min, two isomers
were detected at m/z 341.0877 with identical formula C15H17O9. In
accordance with the literature (Abu-Reidah et al., 2012; Bellés et al.,
2008) and based on data from QTOF–MS analysis, these compounds
were identified as caffeoylhexoses