23144
Due to high affinity for the 5 - HT1A receptor and moderate affinity for SERT , compounds 31 , 32 , 35 , and 37 were evaluated for their affinity for D2L , 5 - HT6 , 5 - HT7 and 5 - HT2A receptors .
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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:
 None