5850
Of the 154 ON123xx compounds , 13 met tier 1 screening criteria based on physicochemical properties [ i . e . , MW < 450 Da , predicted log P between 2 and 3 . 5 ] and in vitro glioma cell cytotoxicity [ i . e . , IC50 < 10 mu M ] and were further tested in tier 2 assays .
 Chemical: ON123xx
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: ON123xx