1	PK8	9-oxa-7-thia-1-azonia-8$L^{2}-zincabicyclo[4.3.0]nona-1,3,5-triene	1.000
2	PYS	2-pyridinethiol	0.778
3	4H2	4-methylpyridine-2(1h)-thione	0.700
4	BEW	1-hydroxy-2-sulfanylpyridinium	0.700