4789
The novel metabolite 21 - nortriamcinolone acetonide was also identified by liquid chromatography - mass spectrometry and NMR analysis .
 Chemical: 21 - nortriamcinolone acetonide
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: 21 - nortriamcinolone acetonide