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The action of piperine ( the pungent component of pepper ) and its derivative SCT - 66 ( ( 2E , 4E ) - 5 - ( 1 , 3 - benzodioxol - 5 - yl ) ) - N , N - diisobutyl - 2 , 4 - pentadienamide ) on different gamma - aminobutyric acid ( GABA ) type A ( GABAA ) receptors , transient - receptor - potential - vanilloid - 1 ( TRPV1 ) receptors and behavioral effects were investigated .
 Chemical: piperine; Chemical: SCT - 66; Chemical: ( ( 2E , 4E ) - 5 - ( 1 , 3 - benzodioxol - 5 - yl ) ) - N , N - diisobutyl - 2 , 4 - pentadienamide ); Chemical: gamma - aminobutyric acid; Chemical: GABA
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: piperine; Chemical: SCT - 66; Chemical: ( ( 2E , 4E ) - 5 - ( 1 , 3 - benzodioxol - 5 - yl ) ) - N , N - diisobutyl - 2 , 4 - pentadienamide ); Chemical: gamma - aminobutyric acid; Chemical: GABA