[(1aS)-1a,1bα,2,5aα,6,6aβ-Hexahydro-6α-[(E)-3-(4-hydroxy-3-methoxyphenyl)propenoyloxy]-1aβ-(hydroxymethyl)oxireno[4,5]cyclopenta[1,2-c]pyran-2α-yl]β-D-glucopyranoside