InChI=1/C10H16O3/c1-7-6-8-9(12-8)10(13-7)4-2-3-5-11-10/h7-9H,2-6H2,1H3/t7-,8-,9-,10+/m1/s rel-(1R,2S,4R,6R)-4-methyltetrahydrospiro[3,7-dioxabicyclo[4.1.0]heptane-2,2'-pyran] spiro[3,7-dioxabicyclo[4.1.0]heptane-2,2'-[2H]pyran], tetrahydro-4-methyl-, (1R,2S,4R,6R)-