('CID100593257', 2),4-cyanocinnoline
('CID100593257', 2),4-Cyanocinnoline
('CID106323416', 1),CYANOCINNOLINE
ldiff: defaultdict(<type 'list'>, {'CID106323416': [0], 'CID100593257': [2, 2]})
f1: [2, 2]
f2: [0]
c1: Counter({2: 2})
c2: Counter({0: 1})
The chosen was  ... CID106323416