9142
Recent work has demonstrated that the recreational drug 3 , 4 - methylenedioxy - methamphetamine ( MDMA ) has affinity for nAChR and also induces up - regulation of nAChR in PC 12 cells .
 Chemical: 3 , 4 - methylenedioxy - methamphetamine; Chemical: MDMA
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: 3 , 4 - methylenedioxy - methamphetamine; Chemical: MDMA