('CID100000544', 2),TRIHYDROXYARSENITE(III)
('CID100000544', 2),TRIHYDROXYARSENITE(III)
('CID105491620', 1),TRIHYDROXYARSENITE(III)
ldiff: defaultdict(<type 'list'>, {'CID100000544': [0, 0], 'CID105491620': [0]})
f1: [0, 0]
f2: [0]
c1: Counter({0: 2})
c2: Counter({0: 1})
The chosen was ... CID100000544