('CID100002233', 2),arginineamide
('CID100002233', 2),ARGININEAMIDE
('CID100039166', 1),Benzoyl-L-arginineamide, nitrosated
ldiff: defaultdict(<type 'list'>, {'CID100039166': [22], 'CID100002233': [0, 0]})
f1: [0, 0]
f2: [22]
c1: Counter({0: 2})
c2: Counter({22: 1})
The chosen was ... CID100002233