Synonyms: 10,17,18-Trioxatricyclo[11.3.1.14,7]octadecane-3,11-dione,15-[[3-O-(6-deoxy-2,3,4-tri-O-methyl-a-L-galactopyranosyl)-2-O-methyl-b-D-xylopyranosyl]oxy]-4-hydroxy-5,8,8,14-tetramethyl-9-[(1E,3E)-5-methyl-1,3-hexadienyl]-,(1S,4R,5R,7R,9R,13S,14S,15S)- (9CI); Polycavernoside B2