23553
To elaborate this probe , we explored the influence of both the nature and the attachment point of the spacer between the fluorophore and the parent compound , ifenprodil .
 Chemical: ifenprodil
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: ifenprodil