13587
That is , inhibitors had nearly 40 % fewer hydrogen bond donors ( P < 0 . 001 ) , a lower total polar surface area ( P < 0 . 05 ) , and greater lipophilicity ( LogP of inhibitors , + 1 . 41 ; noninhibitors , - 1 . 54 ; P < 0 . 001 ) .
 Chemical: hydrogen
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: hydrogen