6334
Using a combination of absorption spectroscopy , linear dichroism ( LD ) and quantum chemical calculations , we identified six electronic transitions that occur within the 25 , 000 - 50 , 000 cm ( - 1 ) spectral range .
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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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