Acetic acid,[[2-[[(2R)-2-amino-3-methyl-1-oxobutyl]amino]-1,1-dimethylethyl]thio]-,(3aS,4R,5S,6S,8R,9R,9aR,10R)-6-ethenyldecahydro-5-hydroxy-4,6,9,10-tetramethyl-1-oxo-3a,9-propano-3aH-cyclopentacycloocten-8-ylester, monohydrochloride (9CI)