('CID101712295', 2),2-(1-naphthyl)-3-(2-naphthyl)acrylicacid
('CID101712295', 2),2-(1-naphthyl)-3-(2-naphthyl)acrylicacid
('CID100244393', 1),Acrylicacid, 2-(p-methoxyphenyl)-3-phenyl- (6CI,7CI,8CI)
ldiff: defaultdict(<type 'list'>, {'CID100244393': [45], 'CID101712295': [29, 29]})
f1: [29, 29]
f2: [45]
c1: Counter({29: 2})
c2: Counter({45: 1})
The chosen was ... CID101712295