A robust platform based on ultra-high performance liquid chromatography quadrupole time of flight tandem mass spectrometry with a two-step data mining strategy in the investigation, classification, and identification of chlorogenic acids in Ainsliaea fragrans Champ - Ouyang, H; Li, J M; Wu, B; Zhang, X Y; Li, Y; Yang, S L; He, M Z; Feng, Y L (J Chromatogr A, 2017)