1 6ML Oxygen-damaged sf4 1.000 2 T2N 3,5-dioxa-7-thia-1-thionia-2$L^{2},4$L^{2},6$L^{3},8$L^{2}-tetraferrabicyclo[4.2.0]octane 0.800 3 8JU Fe4-s4-O cluster 0.727 4 VQ8 Hybrid cluster 0.727