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The ROS scavenger N - acetyl l - cysteine and the mitochondrial antioxidant Mito - TEMPO rescued the inhibitory effect of cucurbitacin I on Rac1 activation .
 Chemical: N - acetyl l - cysteine; Chemical: cucurbitacin I
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
 Entities: N - acetyl l - cysteine, cucurbitacin I 
Answer:
 Chemical: N - acetyl l - cysteine; Chemical: cucurbitacin I