3420
( - ) - Coniine was more effective at eliciting electrical changes in TE - 671 cells and inhibiting fetal movement than was ( + ) - coniine , suggesting stereoselectivity by the receptor .
 Chemical: ( - ) - Coniine; Chemical: ( + ) - coniine
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: ( - ) - Coniine; Chemical: ( + ) - coniine