| 1 | 1,3‐Oxazin‐6‐one |
O=[#6]1:[#8]:[#6]:[#7]:[#6]:[#6]1 |
 |
2 |
2 |
1
|
2
|
2 |
| 2 | 1-Hydroxy-2,6-Dioxa-3-Oxophosphorinone |
[O][P]1(=[O])[O][#6](=[O])[#6]=[#6][O]1 |
 |
2 |
1 |
1
|
1
|
2 |
| 3 | 2‐Methylisoxazolium |
[#6]-[#7+]1:[#6]:[#6]:[#6]:[#8]:1 |
 |
1 |
1 |
1
|
1
|
1 |
| 4 | 3H‐1,3‐Oxazine‐2,6‐Dione |
O=[#6]1:[#7]:[#6]:[#6]:[#6](=O):[#8]1 |
 |
1 |
1 |
1
|
1
|
1 |
| 5 | Alpha-Cyclosulfate |
O=S1(=O)[#8]-[#6]-[#6]-[#8]1 |
 |
2 |
2 |
1
|
2
|
2 |
| 6 | Beta-Sultam |
[O]=[S]1(=[O])[C][C][N]1 |
 |
5 |
5 |
1
|
1
|
7 |
| 7 | Furan |
[#8]1:[#6]:[#6]:[#6]:[#6]1 |
 |
1 |
1 |
1
|
1
|
1 |
| 8 | Gamma-Lactam |
[O-0X1]=[C]1[C][C][C][N]1 |
 |
3 |
1 |
1
|
1
|
7 |
| 9 | Isoselenazolinone |
[O]=[#6]1[#6][#6][Se][#7]1 |
 |
4 |
3 |
1
|
1
|
6 |
| 10 | Isothiazolinone |
[O]=[#6]1[#6][#6][#16][#7]1 |
 |
5 |
5 |
1
|
1
|
5 |
| 11 | Isoxazolidin-3-one |
[#8]=[#6]1-[#6]-[#6]-[#8]-[#7]-1 |
 |
3 |
3 |
1
|
1
|
3 |
| 12 | Rhodanine |
O=[#6]-1-[#6]-[#16]-[#6](=S)-[#7]-1 |
 |
1 |
1 |
1
|
1
|
1 |
| 13 | Thiirane |
[C;r3][S;r3][C;r3] |
 |
2 |
2 |
1
|
1
|
3 |