('CID100079124', 2),Nitrosoethane
('CID100079124', 2),NITROSOETHANE
('CID100149954', 1),N'-{2-[({5-[(dimethylamino)methyl]furan-2-yl}methyl)sulfanyl]ethyl}-N-methyl-2-nitro-N-nitrosoethane-1,1-diamine
ldiff: defaultdict(<type 'list'>, {'CID100079124': [0, 0], 'CID100149954': [99]})
f1: [0, 0]
f2: [99]
c1: Counter({0: 2})
c2: Counter({99: 1})
The chosen was ... CID100079124