4-[(2R,3S,4aR,6S,7R,8aS)-7-Benzyloxy-6-(2-benzyloxy-ethyl)-3-(tert-butyl-dimethyl-silanyloxy)-2,6,8a-trimethyl-octahydro-pyrano[3,2-b]pyran-2-yl]-butyric acid

(2S,3R,4aS,5aR,7aS,12S,12aR,13aS,14aR)-3-(benzyloxy)-2-(2-(benzyloxy)ethyl)-2,4a,5a,12-tetramethyltetradecahydrooxepino[3,2-b]pyrano[2',3':5,6]pyrano[2,3-f]oxepin-9(2H)-one

(2S,3R,4aS,5aR,7aS,12R,12aR,13aS,14aR)-3-(benzyloxy)-2-(2-(benzyloxy)ethyl)-2,4a,5a,12-tetramethyl-2,3,4,4a,5a,6,7,7a,11,12,12a,13a,14,14a-tetradecahydrooxepino[3,2-b]pyrano[2',3':5,6]pyrano[2,3-f]oxepin-9-yl trifluoromethanesulfonate