3′-Isopropyl-8′,8′-dimethyl-3H-spiro[2-benzofuran-1,7′-bicyclo[4.2.0]octa[1,3,5]trien]-3-one

3′-Isopropyl-8′,8′-dimethyl-3H-spiro[2-benzofuran-1,7′-bicyclo[4.2.0]octa[1,3,5]trien]-3-one

Spiro[bicyclo[4.2.0]octa-1,3,5-triene-7,1′(3′H)-isobenzofuran]-3′-one, 8,8-dimethyl-3-(1-methylethyl)-