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Compound 7e , 5 - { 2 - [ 4 - ( 1 , 2 - dihydro - 2 - acenaphthylenyl ) piperazinyl ] ethyl } - 2 , 3 - dihy dro - 1H - indol - 2 - one , from this series showed significant affinities at the 5 - HT1A and 5 - HT2A receptors and moderate affinity at the D2 receptor .
 Chemical: 5 - { 2 - [ 4 - ( 1 , 2 - dihydro - 2 - acenaphthylenyl ) piperazinyl ] ethyl } - 2 , 3 - dihy dro - 1H - indol - 2 - one
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Disease, Chemical 
Text: {0} 
Answer:
 Chemical: 5 - { 2 - [ 4 - ( 1 , 2 - dihydro - 2 - acenaphthylenyl ) piperazinyl ] ethyl } - 2 , 3 - dihy dro - 1H - indol - 2 - one