4774
In this study , a dataset of 1000 diverse test compounds out of 4 . 5 million was generated ; logP values of 759 purchasable compounds ( 46 % non - ionizable , 30 % basic , 17 % acidic , 0 . 5 % zwitterionic and 6 . 5 % ampholytes ) from this selected set were experimentally determined by UHPLC followed by UV detection or MS detection when necessary .
 None
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:  
Answer:
 None