label: (E)-2-(3-(2-(7-(diphenylamino)-9,9-diethyl-9H-fluoren-2-yl)vinyl)-5-methyl-4-oxocyclohexa-2,5-dienylidene) malononitrile
label_lc: (e)-2-(3-(2-(7-(diphenylamino)-9,9-diethyl-9h-fluoren-2-yl)vinyl)-5-methyl-4-oxocyclohexa-2,5-dienylidene) malononitrile