https://pubmed.ncbi.nlm.nih.gov/9880909/
Structures of new acylated oleanene-type triterpene oligoglycosides, theasaponins E1 and E2, from...
Two new acylated oleanene-type triterpene oligoglycosides, theasaponins E1 and E2, were isolated from the seeds of tea plant [Camellia sinensis (L.) O....