5-ethyl-15-oxatetracyclo[8.4.1.0^{1,10}.0^{3,8}]pentadeca-3(8),4,6-triene-2,9-dione

5-ethyl-15-oxatetracyclo[8.4.1.0^{1,10}.0^{3,8}]pentadeca-3(8),4,6-triene-2,9-dione · CAS 35301-66-7