('CID100000294', 5),alpha-1,4-Mannobiose
('CID100000294', 5), a-1,4-Mannobiose
('CID100000294', 5),Mannobiose
('CID100000294', 5),Mannobiose
('CID100000294', 5),4-O-a-Mannobiose
('CID100129887', 3), a-1,3-Mannobiose
('CID100129887', 3),alpha-1,3-Mannobiose
('CID100129887', 3),3alpha-Mannobiose
ldiff: defaultdict(<type 'list'>, {'CID100129887': [7, 10, 7], 'CID100000294': [10, 7, 0, 0, 6]})
f1: [10, 7, 0, 0, 6]
f2: [7, 10, 7]
c1: Counter({0: 2, 10: 1, 6: 1, 7: 1})
c2: Counter({7: 2, 10: 1})
The chosen was ... CID100000294