('CID105375274', 2),N-(2-hydrazino-2-oxoethyl)-n-phenylthiourea
('CID105375274', 2),N-(2-Hydrazino-2-oxoethyl)-N-phenylthiourea
('CID101791555', 1),N-methyl-N'-(3-methylbenzoyl)-N-phenylthiourea
ldiff: defaultdict(<type 'list'>, {'CID101791555': [30], 'CID105375274': [27, 27]})
f1: [27, 27]
f2: [30]
c1: Counter({27: 2})
c2: Counter({30: 1})
The chosen was ... CID105375274