768
Both QNT3 - 18 and QNT3 - 20 did not show cytotoxicity at effective concentration range ( 0 . 4 micro M ) against keratinocyte cells and QNT3 - 18 was more retained than QNT3 - 20 in the skin instead of permeating through the skin .
 Chemical: QNT3 - 18; Chemical: QNT3 - 20; Chemical: QNT3 - 18; Chemical: QNT3 - 20
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
 Entities: QNT3 - 18, QNT3 - 20, QNT3 - 18, QNT3 - 20 
Answer:
 Chemical: QNT3 - 18; Chemical: QNT3 - 20; Chemical: QNT3 - 18; Chemical: QNT3 - 20