1	P1C	Deacetoxycephalosporin-C	1.000
2	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	0.857
3	APV	6-(5-amino-5-carboxy-pentanoylamino)-3-hydroxymethyl-7-oxo-4-thia-1-aza-bicyclo[3.2.0]heptane-2-carboxylic acid	0.846
4	IP1	Isopenicillin N	0.846