2-OXABICYCLO,(3,2,0),HEPT-3-ENE,6,7-CARBONATE,6,7- DICHLORO (CIS) 3a,6b-dichloro-3a,3b,6a,6b-tetrahydrofuro[2',3':3,4]cyclobuta[1,2-d][1,3]dioxol-2-one InChI=1/C7H4Cl2O4/c8-6-3-1-2-11-4(3)7(6,9)13-5(10)12-6/h1-4 furo[2',3':3,4]cyclobuta[1,2-d]-1,3-dioxol-2-one, 3a,6b-dichloro-3a,3b,6a,6b-tetrahydro-