(2s,3r,4s,5s,6r)-2-[[(1s,5r)-6,6-dimethyl-4-bicyclo[3.1.1]hept-3-enyl]methoxy]-6-[[(2s,3r,4s,5s)-3,4,5-trihydroxyoxan-2-yl]oxymethyl]oxane-3,4,5-triol