('CID100076839', 6),BUTYLPHOSPHONATE
('CID100076839', 6),butylphosphonic acid
('CID100076839', 6),Butylphosphonic acid
('CID100076839', 6),1-BUTYLPHOSPHONIC ACID
('CID100076839', 6), n-Butylphosphonic acid
('CID100076839', 6),n-Butylphosphonic acid
('CID121301230', 4),1-(2-acetylallyloxy)butylphosphonic acid
('CID121301230', 4),1-(2-methylene-3-oxo-butoxy)butylphosphonic acid
('CID121301230', 4),1-(2-methylene-3-oxobutoxy)butylphosphonic acid
('CID121301230', 4),1-(2-methylidene-3-oxobutoxy)butylphosphonic acid
ldiff: defaultdict(<type 'list'>, {'CID121301230': [24, 32, 31, 33], 'CID100076839': [0, 4, 4, 6, 7, 6]})
f1: [0, 4, 4, 6, 7, 6]
f2: [24, 32, 31, 33]
c1: Counter({4: 2, 6: 2, 0: 1, 7: 1})
c2: Counter({24: 1, 32: 1, 33: 1, 31: 1})
The chosen was ... CID100076839