150132-86-8 2-Butenoicacid, 2-methyl-,5,6,7,8-tetrahydro-13,14-dimethoxy-6,7-dimethylcycloocta[1,2-f:3,4-f']bis[1,3]benzodioxole-5,8-diylester, stereoisomer 150132-87-9 Benzo[3,4]cycloocta[1,2-f][1,3]benzodioxole-1,8-diol,5,6,7,8-tetrahydro-2,3,13-trimethoxy-6,7-dimethyl-, 8-acetate, stereoisomer