You will be shown an abstract from a biomedical research paper. Given this abstract, your task is to extract all unique entities of the following types: ["Brand", "UnapprovedDrug", "Drug", "DrugGroup"].

Please return the output as a JSON object of the format: {"Brand" : ["Aspirin", ...], "DrugGroup": ["Salicyclate", ...], "Drug": ["Phenobarbital", ...], "UnapprovedDrug": ["Heroin", ...]}. The keys should be entity types and values should be lists of extracted entities belonging to the corresponding type. If you cannot find entities belonging to a specific type, the value should be [].

Only output the JSON object and do not include any additional text.

Abstract:

Increases in serum creatinine have occurred when CEFOTAN was given alone. If CEFOTAN and an aminoglycoside are used concomitantly, renal function should be carefully monitored, because nephrotoxicity may be potentiated. Drug/Laboratory Test Interactions: The administration of CEFOTAN may result in a false positive reaction for glucose in the urine using Clinitest  , Benedicts solution, or Fehlings solution. It is recommended that glucose tests based on enzymatic glucose oxidase be used. As with other cephalosporins, high concentrations of cefotetan may interfere with measurement of serum and urine creatinine levels by Jaffe  reaction and produce false increases in the levels of creatinine reported.
{"Brand": ["CEFOTAN"], "Drug": ["cefotetan"], "DrugGroup": ["cephalosporins", "aminoglycoside"], "UnapprovedDrug": []}