2991
The reported research works showed that the hydrophobicity on the van der Waals ( vdW ) surface of the molecules ( aroused from the aromatic ring ) necessary for the hERG blocking activity along with topological and electronic properties .
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Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
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