('CID100065505', 3),Octylphenoxypolyethoxyethanol-iodine complex ('CID100065505', 3),p-Octylphenoxypolyethoxyethanol - iodine complex ('CID100065505', 3),P-octylphenoxypolyethoxyethanol - Iodine Complex ('CID100005590', 2),Octylphenoxypolyethoxyethanols ('CID100005590', 2),Octylphenoxypolyethoxyethanol ldiff: defaultdict(, {'CID100065505': [15, 19, 19], 'CID100005590': [1, 0]}) f1: [15, 19, 19] f2: [1, 0] c1: Counter({19: 2, 15: 1}) c2: Counter({0: 1, 1: 1}) The chosen was ... CID100005590