20821
Discovery of the Antibiotic Phosacetamycin via a New Mass Spectrometry - Based Method for Phosphonic Acid Detection .
 Chemical: Phosacetamycin; Chemical: Phosphonic Acid
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: Phosacetamycin; Chemical: Phosphonic Acid