p. 129 - 138
(2008/02/03)(1'R,3'aR,8'aS,9'S,9'aR)-1',3'a,5',7',8',8'a,9',9'a-octahydro-1'-methyl-3'-oxo-spiro[1,3-dioxolane-2,6'(3'H)-naphtho[2,3-c]furan]-9'-carboxylic acid phenylmethyl ester
C16H20O6
(1'R,3'aR,4'aR,8'aR,9'S,9'aS)-decahydro-1'-methyl-3'-oxo-spiro[1,3-dioxolane-2,6'(3'H)-naphtho[2,3-c]furan]-9'-carboxylic acid