('CID124901697', 1),Triazolopyrimidine, 3b
('CID105327131', 1),TRIAZOLOPYRIMIDINE
ldiff: defaultdict(<type 'list'>, {'CID124901697': [4], 'CID105327131': [0]})
f1: [4]
f2: [0]
c1: Counter({4: 1})
c2: Counter({0: 1})
The chosen was  ... CID105327131