Robuta

https://www.scirp.org/reference/ReferencesPapers?ReferenceID=1834486 Ershov, A.Y., Lagoda, I.V., Yakimovich, S.I., Pakalnis, V.V., Zerova, I.V., Dobrodumov, A.V. and... Ershov, A.Y., Lagoda, I.V., Yakimovich, S.I., Pakalnis, V.V., Zerova, I.V., Dobrodumov, A.V. and Shamanin, V.V. (2009) Tautomerism and Conformational Isomerism... a y