('CID100037767', 5),Pipotiazine palmitate
('CID100037767', 5),Pipotiazine Palmitate
('CID100037767', 5),PIPOTIAZINE PALMITATE
('CID100037767', 5),Pipotiazine palmitate (USAN)
('CID100037767', 5),Pipotiazine palmitate [USAN]
('CID100062867', 3),Pipotiazine
('CID100062867', 3),Pipotiazine (INN)
('CID100062867', 3),Pipotiazine [INN:BAN]
ldiff: defaultdict(<type 'list'>, {'CID100037767': [10, 10, 10, 17, 17], 'CID100062867': [0, 6, 10]})
f1: [10, 10, 10, 17, 17]
f2: [0, 6, 10]
c1: Counter({10: 3, 17: 2})
c2: Counter({0: 1, 10: 1, 6: 1})
The chosen was  ... CID100062867