InChI=1/C13H16O3/c14-12-10-8-4-5-9(15-8)11(10)13(16-12)6-2-1-3-7-13/h4-5,8-11H,1-3,6-7H2/t8-,9+,10-,11+/m1/s rel-(3a'R,4'S,7'R,7a'S)-3a',4',7',7a'-tetrahydro-3'H-spiro[cyclohexane-1,1'-[2,8]dioxa[4,7]epoxy[2]benzofuran]-3'-one