Robuta

https://pubmed.ncbi.nlm.nih.gov/17268112/ Convallasaponin A, a new 5beta-spirostanol triglycoside from the rhizomes of Convallaria majalis The rhizomes of Convallaria majalis have been analyzed for their steroidal glycoside constituents, resulting in the isolation of a new 5beta-spirostanol... a new