{ "title": "Substructure Search by SMILES", "description": "Search for compounds containing a benzene ring substructure using the fast substructure search endpoint.", "request": { "method": "GET", "url": "https://pubchem.ncbi.nlm.nih.gov/rest/pug/compound/fastsubstructure/smiles/c1ccccc1/cids/JSON?MaxRecords=10", "headers": { "Accept": "application/json" } }, "response": { "status": 200, "headers": { "Content-Type": "application/json" }, "body": { "IdentifierList": { "CID": [241, 996, 1049, 1108, 1116, 1201, 1203, 1289, 1303, 1313], "Size": 10 } } } }