(1S,3aS,4R,6S,6aR)-6-(((R)-5-ethyl-2-methyl-3-oxo-2,3-dihydrofuran-2-yl)methyl)-4-isopropyl-4-methoxy-3a-methyl-3-oxohexahydrofuro[3,4-c]furan-1-carbaldehyde

(2aS,2a1R,3R,4aS,6R,11aS)-11-hydroxy-3-isopropyl-3-methoxy-2a,6,10-trimethyl-2a,2a1,3,5,6,10,11,11a-octahydro-2H-1,4,12-trioxa-6,9-methanocyclodeca[cd]pentalene-2,7(4aH)-dione

((1S,3aS,4R,6S,6aR)-6-(((R)-5-ethyl-2-methyl-3-oxo-2,3-dihydrofuran-2-yl)methyl)-4-isopropyl-4-methoxy-3a-methyl-3-oxotetrahydro-1H,3H-furo[3,4-c]furan-1-yl)methyl pivalate

(2aS,2a1R,3R,4aS,6R,11S,11aS)-3-isopropyl-3-methoxy-2a,6,10-trimethyl-2,7-dioxo-2a,2a1,3,4a,5,6,7,10,11,11a-decahydro-2H-1,4,12-trioxa-6,9-methanocyclodeca[cd]pentalen-11-yl methanesulfonate

(1S,4S,5R,6R,8R)-4-((tert-butyldiphenylsiloxy)methyl)-6-(hydroxymethyl)-8-isopropyl-8-methoxy-1-methyl-3,7-dioxabicyclo(3.3.0)octan-2-one