1	S2J	Methyl 2-[(2~{R})-1-(ethylcarbamoyl)-3-oxidanylidene-piperazin-2-yl]ethanoate	1.000
2	S1M	Methyl 2-[(2~{S})-1-ethanoyl-3-oxidanylidene-piperazin-2-yl]ethanoate	0.778