(2R,3S,4aR,4a'S,8aS,8a'R)-4,4a,4a',6,7,7',8,8a,8',8a'-decahydro-3H,6'H-2,2'-spirobi[pyrano[3,2-b]pyran]-3-ol

(4aR,5aS,6aR,10aS,11aR,13aS)-5a,11a-Dimethoxy-3,4,4a,5a,6,6a,8,9,10,10a,11a,13a-dodecahydro-2H-1,5,7,11-tetraoxa-benzo[4,5]cyclohepta[1,2-b]naphthalene