('CID100079372', 8), N,N',N'', N'''-Tetrakis(hydroxymethyl)glycoluril
('CID100079372', 8),N,N',N'',N'''-Tetrakis(hydroxymethyl)glycoluril
('CID100079372', 8),N,N'',N'''-Tetrakis(hydroxymethyl)glycoluril
('CID100079372', 8), Tetrakis(hydroxymethyl)glycoluril
('CID100079372', 8),Tetrakis(hydroxymethyl)glycoluril
('CID100079372', 8), Glycoluril, 1,3,4,6-tetraki
('CID100079372', 8),Glycoluril, 1,3,4,6-tetrakis(hydroxymethyl)-
('CID100079372', 8),Glycoluril,3,4,6-tetrakis(hydroxymethyl)-
('CID100021237', 5),Glycoluril, 3a,6a-diphenyl-
('CID100021237', 5),GLYCOLURIL, 3a,6a-DIPHENYL-
('CID100021237', 5),Glycoluril,6a-diphenyl-
('CID100021237', 5),Glycoluril,8-diphenyl-
('CID100021237', 5),Glycoluril, 7,8-diphenyl-
ldiff: defaultdict(<type 'list'>, {'CID100021237': [17, 17, 13, 12, 15], 'CID100079372': [39, 37, 34, 24, 23, 18, 34, 31]})
f1: [39, 37, 34, 24, 23, 18, 34, 31]
f2: [17, 17, 13, 12, 15]
c1: Counter({34: 2, 37: 1, 39: 1, 18: 1, 23: 1, 24: 1, 31: 1})
c2: Counter({17: 2, 12: 1, 13: 1, 15: 1})
The chosen was  ... CID100021237