863
The determined structures were characterized with a unit of galactose which is rarely seen in the previously isolated pyrrole and pyridinol compounds .
 Chemical: galactose; Chemical: pyrrole; Chemical: pyridinol
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: galactose; Chemical: pyrrole; Chemical: pyridinol