2-[(2r,3r,4s,5r,6s)-6-[(1s)-1-[(2s,5r,7s,8r,9s)-2-[(5s)-5-[(2r,3s,4r,5r)-5-[(3s,4s,5r,6s)-6-hydroxy-4-methoxy-3,5,6-trimethyl-tetrahydropyran-2-yl]-4-methoxy-3-methyl-tetrahydrofuran-2-yl]-5-methyl-tetrahydrofuran-2-yl]-9-methoxy-2,8-dimethyl-1,6-dioxaspi