Synonyms: 2-Butenoicacid, 2-methyl-,5-[1-(acetyloxy)-2-(2,5-dihydro-5-oxo-3-furanyl)ethyl]-8a-[(acetyloxy)methyl]octahydro-6-hydroxy-5,6-dimethylspiro[naphthalene-1(2H),2'-oxiran]-8-ylester, [1R-[1a,4ab,5b(S*),6b,8a(E),8aa]]-; Spiro[naphthalene-1(2H),2'-oxirane], 2-butenoicacid deriv.; Scutalpin B