Fe
Tester

 1   0  0  0  0  0  0  0  0  0999 V2000
         0         0         0 Fe  0  0  0  0  0  0  0  0  0  0  0  0
M  END
> <PUBCHEM_EXT_DATASOURCE_REGID>
0000000

> <PUBCHEM_SUBSTANCE_SYNONYM>
Iron

> <PUBCHEM_SUBSTANCE_COMMENT>
Surname, Name; Lastname, Firstname, (2020), Title, Journal, 1, 7, 2000. https://doi.org/10.5555/12345678

> <PUBCHEM_EXT_DATASOURCE_URL>
https://www.crystallography.net/cod/

> <PUBCHEM_EXT_SUBSTANCE_URL>
https://www.crystallography.net/cod/0000000.html

$$$$
