2344
The present study was aimed at predicting the cytotoxic effects of mixtures of four amphetaminic derivatives : MDMA , methamphetamine , 4 - methylthioamphetamine and d - amphetamine in a human hepatoma cell line .
 Chemical: MDMA; Chemical: methamphetamine; Chemical: 4 - methylthioamphetamine; Chemical: d - amphetamine
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: MDMA; Chemical: methamphetamine; Chemical: 4 - methylthioamphetamine; Chemical: d - amphetamine