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Among the 33 substances that were tested , compound 12 , i . e . 4 , 4 ' - [ 1 , 12 - dodecanediyl ( oxy ) ] bisbenzaldehyde , emerged as the most promising hit .
 Chemical: 4 , 4 ' - [ 1 , 12 - dodecanediyl ( oxy ) ] bisbenzaldehyde
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: 4 , 4 ' - [ 1 , 12 - dodecanediyl ( oxy ) ] bisbenzaldehyde