| Wikidata property with datatype string that is not an external identifier | Q21099935 |
| Wikidata property related to chemistry | Q21294996 |
| P1793 | format as a regular expression | ^(\[[^\s]+\]\)?)$ |
| P3254 | property proposal discussion | https://www.wikidata.org/wiki/Wikidata:Property_proposal/SMIRKS |
| P1630 | formatter URL | https://smarts.plus/smartsview/download_rest?smarts=$1;filetype=svg | |
| P6104 | maintained by WikiProject | WikiProject Chemistry | Q8487234 |
| P2302 | property constraint | distinct-values constraint | Q21502410 |
| subject type constraint | Q21503250 | ||
| format constraint | Q21502404 | ||
| allowed-entity-types constraint | Q52004125 | ||
| property scope constraint | Q53869507 | ||
| P1659 | related property | SMARTS notation | P8533 |
| P2668 | stability of property value | never changes | Q23611288 |
| P1629 | Wikidata item of this property | SMIRKS | Q124450357 |
| Q124450357 | SMIRKS | Wikidata property | P1687 |
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