28350
QSAR studies showed that total symmetry index ( Gu ) , 3D - MoRSE ( Mor31v and Mor32u ) and 3D Petitjean index ( PJI3 ) were the most important descriptors accounting for the observed cytotoxicities .
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Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: Chemical 
Text: {0} 
Answer:
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