20846
Here , we report on the degradation of MAC13243 into the active species , S - ( 4 - chlorobenzyl ) isothiourea .
 MAC13243, S - ( 4 - chlorobenzyl ) isothiourea
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
 MAC13243, S - ( 4 - chlorobenzyl ) isothiourea