3,4-Dimethoxybicyclo[4.2.0]octa-1,3,5-triene-7-carbonitrile; 1,2-Dihydro-4,5-dimethoxybenzocyclobutene-1-carbonitrile; 1-Cyano-4,5-dimethoxybenzocyclobutene;4,5-Dimethoxy-1-cyanobenzocyclobutane; 4,5-Dimethoxy-1-cyanobenzo Cyclobutane