Synonyms: 2-Butenoicacid, 2-methyl-,5,6,7,8-tetrahydro-1,6-dihydroxy-2,3,13-trimethoxy-6,7-dimethylbenzo[3,4]cycloocta[1,2-f][1,3]benzodioxole-5,8-diylester, stereoisomer; Benzo[3,4]cycloocta[1,2-f][1,3]benzodioxole, 2-butenoicacid deriv.; Schisantherin H