Chen H.-Y.Tsai S.-F.SHOEI-SHENG LEE2021-07-162021-07-16202094536https://www.scopus.com/inward/record.uri?eid=2-s2.0-85075745410&doi=10.1002%2fjccs.201900302&partnerID=40&md5=a4be15a4b916961b38ae4b16e96beec4https://scholars.lib.ntu.edu.tw/handle/123456789/571370Comprehensive 1H and 13C NMR assignment of 13 protobassic acid saponinsjournal article10.1002/jccs.2019003022-s2.0-85075745410