21265
The 1 , 3 - dipolar cycloaddition of diazomethane with trans - dibenzyl glutaconate yields a 1 - pyrazoline , which may be reduced directly to the pyrazolidine .
 Chemical: diazomethane; Chemical: trans - dibenzyl glutaconate; Chemical: 1 - pyrazoline; Chemical: pyrazolidine
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: diazomethane; Chemical: trans - dibenzyl glutaconate; Chemical: 1 - pyrazoline; Chemical: pyrazolidine