1	IP1	Isopenicillin N	1.000
2	A14	(1s,4s,5s,7r)-7-{[(5s)-5-amino-5-carboxypentanoyl]amino}-3,3-dimethyl-6-oxo-2-thiabicyclo[3.2.0]heptane-4-carboxylic acid	0.920
3	APV	6-(5-amino-5-carboxy-pentanoylamino)-3-hydroxymethyl-7-oxo-4-thia-1-aza-bicyclo[3.2.0]heptane-2-carboxylic acid	0.920
4	P1C	Deacetoxycephalosporin-C	0.846
5	CSC	4-(3-acetoxymethyl-2-carboxy-8-oxo-5-thia-1-aza-bicyclo[4.2.0]oct-2-en-7-ylcarbamoyl)-1-carboxy-butyl-ammonium	0.733