LC–PDA–MS Examination of sheet B; PDA chromatogram a, TIC b, and UV spectra of peak two c and of peak 2b d, and ESI mass spectra of peak two e and of peak 2b file LC–PDA–MS Evaluation of sheet B; PDA chromatogram a, TIC b, and UV spectra of peak 2 c and of peak 2b d, and E