('CID100121886', 3),L-Tyrosinamide, N-(3-carboxy-1-oxopropyl)-L-leucyl-L-leucyl-L-valyl-N-(4-methyl-2-oxo-2H-1-benzopyran-7-yl)-
('CID100121886', 3),n-(3-carboxypropanoyl)leucylleucyl-l-valyl-n-(4-methyl-2-oxo-2h-chromen-7-yl)-l-tyrosinamide
('CID100121886', 3),N-(3-carboxypropanoyl)-L-leucyl-L-leucyl-L-valyl-N-(4-methyl-2-oxo-2H-chromen-7-yl)-L-tyrosinamide
('CID105051742', 2),N-(3-carboxy-1-oxopropyl)-L-leucyl-N-(4-methyl-2-oxo-2H-1-benzopyran-7-yl)-L-tyrosinamide
('CID105051742', 2),N-(3-carboxypropanoyl)-L-leucyl-N-(4-methyl-2-oxo-2H-chromen-7-yl)-L-tyrosinamide
ldiff: defaultdict(<type 'list'>, {'CID100121886': [94, 78, 84], 'CID105051742': [75, 67]})
f1: [94, 78, 84]
f2: [75, 67]
c1: Counter({84: 1, 78: 1, 94: 1})
c2: Counter({67: 1, 75: 1})
The chosen was  ... CID105051742