Showing structure for (2r,4'as,5'r,5''s,6'r,8's,8'ar)-5''-(furan-3-yl)-8'a-(hydroxymethyl)-6'-methyl-2''-oxo-hexahydro-2'h-dispiro[oxirane-2,1'-naphthalene-5',3''-oxolan]-8'-yl acetate