Synonyms: 2-Propenoicacid, 2-methyl-,2,3,3a,4,4a,5,7a,8,9,9a-decahydro-3,4a,8-trimethyl-2,5-dioxoazuleno[6,5-b]furan-4-ylester, [3S-(3a,3ab,4b,4aa,7ab,8b,9ab)]-; Ambros-2-en-12-oic acid, 6a,8b-dihydroxy-4-oxo-, 12,8-lactone, methacrylate, (11S)- (8CI);Azuleno[6,5-b]furan, 2-propenoic acid deriv.; 11,13-Dihydrohelenalinmethacrylate; 11a,13-Dihydrohelenalinmethacrylate; Arnicolide D