('CID100616528', 1),Glycine, N-[N5-[imino[(trifluoroacetyl)amino]methyl]-N2-[1-[S-(2-methoxy-2-oxoethyl)-N-(trifluoroacetyl)-L-cysteinyl]-L-prolyl]-L-ornithyl]-, methyl ester
('CID111963489', 1),N-[(1r)-2-[(1-{[({6-[amino(Imino)methyl]pyridin-3-Yl}methyl)amino]carbonyl}cyclopentyl)amino]-1-(Cyclohexylmethyl)-2-Oxoethyl]glycine
ldiff: defaultdict(<type 'list'>, {'CID111963489': [104], 'CID100616528': [125]})
f1: [125]
f2: [104]
c1: Counter({125: 1})
c2: Counter({104: 1})
The chosen was  ... CID111963489