Synonyms: 2-Butenoicacid, 2-methyl-,2,3,3a,4,5,5a,8,9b-octahydro-3,5a,9-trimethyl-2,8-dioxonaphtho[1,2-b]furan-3-ylester, [3S-[3a(Z),3aa,5aa,9ba]]-; Naphtho[1,2-b]furan, 2-butenoic acid deriv.; (+)-Decipienin A; 11a-Angeloyloxy-a-santonin; Decipienin A