('CID100060754', 9),Amersham brand of gadodiamide
('CID100060754', 9),gadodiamide
('CID100060754', 9),Gadodiamide
('CID100060754', 9),Gadodiamide hydrate
('CID100060754', 9),Gadodiamide hydrate (JAN)
('CID100060754', 9),gadodiamide
('CID100060754', 9),Gadodiamide hydrate
('CID100060754', 9),Nycomed brand of gadodiamide
('CID100060754', 9),Sanofi Winthrop brand of gadodiamide
('CID100153921', 7),Gadodiamide [USAN:USP]
('CID100153921', 7),Gadodiamide-Supplied by Selleck Chemicals
('CID100153921', 7),Gadodiamide [USAN:USP]
('CID100153921', 7),Gadodiamide (USP/INN)
('CID100153921', 7),gadodiamide
('CID100153921', 7),gadodiamide
('CID100153921', 7),Omniscan, Gadodiamide
ldiff: defaultdict(<type 'list'>, {'CID100060754': [18, 0, 0, 8, 14, 0, 8, 17, 25], 'CID100153921': [11, 30, 11, 10, 0, 0, 10]})
f1: [18, 0, 0, 8, 14, 0, 8, 17, 25]
f2: [11, 30, 11, 10, 0, 0, 10]
c1: Counter({0: 3, 8: 2, 14: 1, 17: 1, 18: 1, 25: 1})
c2: Counter({0: 2, 10: 2, 11: 2, 30: 1})
The chosen was ... CID100060754