InChI=1/C9H14O3/c1-2-5-10-9(4-1)8-7(12-8)3-6-11-9/h7-8H,1-6H spiro[3,7-dioxabicyclo[4.1.0]heptane-2,2'-[2H]pyran], tetrahydro- tetrahydrospiro[3,7-dioxabicyclo[4.1.0]heptane-2,2'-pyran]