('CID100003429', 7),fucitol
('CID100003429', 7),FUCITOL (L)
('CID100003429', 7),Fucitol, L-(4CI)
('CID100003429', 7), L-Fucitol
('CID100003429', 7),L-Fucitol
('CID100003429', 7),fucitol
('CID100003429', 7),FUCITOL
('CID100526695', 4),2-o-acetyl-1,5-anhydro-3,4-di-o-methyl-d-fucitol
('CID100526695', 4),2-O-acetyl-1,5-anhydro-3,4-di-O-methyl-D-fucitol
('CID100526695', 4),2-O-acetyl-1,5-anhydro-3,4-di-O-methyl-D-fucitol
('CID100526695', 4),2-O-acetyl-1,5-anhydro-3,4-di-O-methyl-D-fucitol
ldiff: defaultdict(<type 'list'>, {'CID100526695': [41, 41, 41, 41], 'CID100003429': [0, 4, 9, 3, 2, 0, 0]})
f1: [0, 4, 9, 3, 2, 0, 0]
f2: [41, 41, 41, 41]
c1: Counter({0: 3, 9: 1, 2: 1, 3: 1, 4: 1})
c2: Counter({41: 4})
The chosen was ... CID100003429