29857
Benzothiazinones with large substituents in the 2 - position , e . g . methoxy - cinnamoylamino , phenylbutyrylamino , or chlorobenzylpiperazinylbenzamido residues ( 14 , 17 , 27 , 28 ) showed high affinity and selectivity for A2AARs ( Ki human A2AAR : 39 . 5 - 69 . 5 nM ) .
 Benzothiazinones, methoxy, cinnamoylamino, phenylbutyrylamino, chlorobenzylpiperazinylbenzamido
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
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Answer:
 Benzothiazinones, methoxy, cinnamoylamino, phenylbutyrylamino, chlorobenzylpiperazinylbenzamido