label: 4-(4-(2-(dimethylamino)ethoxy)phenyl)-3,4-diphenyl-2-(9beta-deoxyribofuranosyl-6-oxopurin-2-ylamino)-3-butene
label_lc: 4-(4-(2-(dimethylamino)ethoxy)phenyl)-3,4-diphenyl-2-(9beta-deoxyribofuranosyl-6-oxopurin-2-ylamino)-3-butene