Diethylenetriamine Pentaacetic Acid (DTPA) has no antonyms as it is a chemical compound with a specific formula and properties. DTPA is a chelating agent used to bind metals such as calcium, zinc, and copper in industrial processes, medical imaging, and treating metal poisoning. Its molecular structure contains two amino groups, carboxylic acid groups, and five acetic acid molecules, making it a versatile compound with numerous applications. Therefore, it is impossible to have an antonym for DTPA as it is a scientific term rather than a descriptive word. However, some may argue that other chelating agents exist, such as ethylene-diaminetetraacetic acid (EDTA), which can compete with DTPA for metal ions in certain applications.