19-Norlanosta-5,23-diene-11,22-dione, 2,3,16,20,25-pentahydroxy-9-methyl-, (2beta,3alpha,9beta,10alpha,16alpha,23E)- 2,3,16,20,25-Pentahydroxy-9-methyl-19-norlanosta-5,23-diene-11,22-dione (2beta,3alpha,9beta,10alpha,16alpha,23E)- 5939-57-1 CCRIS 7546 Cucurbitacin F NSC 251680