Verrucarin A, 2',3'-didehydro-2'-deoxy-, (2'E)-; Verrucarin J (7CI,8CI); (2'E)-2',3'-Didehydro-2'-deoxyverrucarin A; Spiro[16,18-methano-1H,3H,23H-[1,6,12]trioxacyclooctadecino[3,4-d][1]benzopyran-17(18H),2'-oxirane], verrucarin A deriv.; Muconomycin B