25918
Analysis of the antioxidant properties of differently substituted 2 - and 3 - indolyl carbohydrazides and related derivatives .
 Chemical: 2 - and 3 - indolyl carbohydrazides
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
 Entities: 2 - and 3 - indolyl carbohydrazides 
Answer:
 Chemical: 2 - and 3 - indolyl carbohydrazides