Robuta

https://www.jstage.jst.go.jp/article/cpb1958/32/5/32_5_1741/_article Tannins and Related Compounds. XIX. Eight New Gallotannins Containing a Proto-quercitol Core from... Access full-text academic articles: J-STAGE is an online platform for Japanese academic journals. https://phytochem.nal.usda.gov/chemical-l-quercitol-0 Chemical L-QUERCITOL | Dr. Duke's Phytochemical and Ethnobotanical Databases chemicaldrdukeethnobotanicaldatabases