Template for Electronic Submission to ACS Journals

Get the full record (in XML) of CIDs that have the substructure “C3=NC1=C(C=NC2=C1C=NC=C2)[N]3”

Once again, I am not clear on how to read this file,
https://pubchem.ncbi.nlm.nih.gov/rest/pug/compound/fastsubstructure/smiles/C3=NC1=C(C=NC2=C1C=NC=C2)[N]3/record/xml

Item URL: 
https://hypothes.is/a/Ht5dWiRhEeeq4SNO2FUPYQ