methyl (1'S,5'R,5a'S,5a1'R,7a'R,8'S,10'S,10a'R)-8'-hydroxy-10'-(hydroxymethyl)-9'-methylene-10a'-(((2-(trimethylsilyl)ethoxy)methoxy)methyl)hexahydro-1'H,5'H-spiro[cyclohexane-1,3'-[1,5]methano[1,3]dioxocino[5,6,7-cd]benzofuran]-5a'(6'H)-carboxylate

(1S,2R,4S,4aS,5S,8aR)-2,4-Diacetoxy-1-acetoxymethyl-5-hydroxymethyl-6-methylene-4a-(2-trimethylsilanyl-ethoxymethoxymethyl)-decahydro-naphthalene-1-carboxylic acid methyl ester

(1S,2R,4S,4aS,5S,6R,8aR)-2,4-Diacetoxy-1-acetoxymethyl-6-hydroxy-5-hydroxymethyl-4a-(2-trimethylsilanyl-ethoxymethoxymethyl)-decahydro-naphthalene-1-carboxylic acid methyl ester

(3aS,6aR,7S,8R,10S,10aS)-8,10-Diacetoxy-7-acetoxymethyl-4-methylene-3-oxo-decahydro-2-oxa-cyclopenta[d]naphthalene-7-carboxylic acid methyl ester