('CID102762285', 4),(3R)-3-[(1,1-Dimethylethoxycarbonyl)amino]-4-(2,4,5-trifluorophenyl)butanoicacid
('CID102762285', 4),(3R)-3-[N-(tert-Butoxycarbonyl)amino]-4-(2,4,5-trifluorophenyl)butanoicacid
('CID102762285', 4),(3R)-3-[(tert-Butoxycarbonyl)amino]-4-(2,4,5-trifluorophenyl)butanoicacid
('CID102762285', 4),(3R)-N-(tert-Butoxycarbonyl)-3-amino-4-(2,4,5-trifluorophenyl)butanoicacid
('CID100099823', 4),Butanoicacid, 2-hydroxy-3-methyl-, (S)-
('CID100099823', 4),Butanoicacid, 2-hydroxy-3-methyl-, calcium salt (2:1), (S)- (9CI)
('CID100099823', 4),Butanoicacid, 2-hydroxy-3-methyl-, monosodium salt (9CI)
('CID100099823', 4),Butanoicacid, 2-hydroxy-3-methyl-, monosodium salt, (2S)- (9CI)
ldiff: defaultdict(<type 'list'>, {'CID100099823': [27, 53, 44, 51], 'CID102762285': [68, 63, 61, 62]})
f1: [68, 63, 61, 62]
f2: [27, 53, 44, 51]
c1: Counter({68: 1, 61: 1, 62: 1, 63: 1})
c2: Counter({51: 1, 27: 1, 44: 1, 53: 1})
The chosen was  ... CID100099823