('CID100007809', 2),Para-Xylene
('CID100007809', 2),PARA-XYLENE
('CID103654862', 2),2,5-BIS(METHOXYMETHYL)-PARA-XYLENE
('CID103654862', 2),2,5-Bis-(Methoxymethyl)-Para-Xylene
ldiff: defaultdict(<type 'list'>, {'CID100007809': [0, 0], 'CID103654862': [23, 24]})
f1: [0, 0]
f2: [23, 24]
c1: Counter({0: 2})
c2: Counter({24: 1, 23: 1})
The chosen was ... CID100007809