17755
The optimized compound , N - ( 4 - tert - butylbenzyl ) - 1 , 5 - dimethyl - 1 , 5 - dihydropyrazolo [ 4 , 3 - c ] [ 2 , 1 ] benzothiazin - 8 - amine 4 , 4 - dioxide 30 possessed significant FAK kinase inhibitory activities both in cell - free ( IC50 = 0 . 64 mu M ) and in cellular assays ( IC50 = 7 . 1 mu M ) .
 Chemical: N - ( 4 - tert - butylbenzyl ) - 1 , 5 - dimethyl - 1 , 5 - dihydropyrazolo [ 4 , 3 - c ] [ 2 , 1 ] benzothiazin - 8 - amine 4 , 4 - dioxide
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
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Answer:
 Chemical: N - ( 4 - tert - butylbenzyl ) - 1 , 5 - dimethyl - 1 , 5 - dihydropyrazolo [ 4 , 3 - c ] [ 2 , 1 ] benzothiazin - 8 - amine 4 , 4 - dioxide