2401
Furthermore , VPA facilitated the off - line learning process of conditioned fear extinction and habituation during sleep , while DCS facilitated this process during waking .
 Chemical: VPA; Chemical: DCS
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: VPA; Chemical: DCS