12162
It has been confirmed that the tetrahydrofuran derivatives are cytotoxic but , in contrast to previous reports , it has been found that the cytoxicity is not due to interactions with the microtubule network .
 Chemical: tetrahydrofuran
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: tetrahydrofuran