How to extract table of contents from fb2 book?

I have a book in fb2 format. I want to print the table of contents, containing names and numbers of "parts", "chapters", "episodes" and so on. Is there a way I can do this from terminal? There is a similar question, but for epub format . I know fb2 is an xml format. But is there a tool to extract only TOC? They are inside tags `, and `. If there is not, I guess it is possible to make xsl file based on official FB2_to_txt.xsl file. Also maybe ebook-convert could do this? The book that I am working on has the following structure:

fiction
      
        John
        Doe
      
      Fiction Book
      
        
Hello
      
      john, doe, fiction
      18.07.2011
      
      en
    
    
      
        
        
        
      
      Fb2 Gem
      18.07.2011
      
      
      
      1.0
    
    
    
  
  
    
      
John Doe
      
      
Fiction Book
    
    
      
        
Part 1
        
Some name of Part 1
      
      
        
          
Chapter 1
          
Some name of Chapter 1
        
        Episode 1
        
Line one of the first episode
        
Line two of the first episode
        
Line three of the first episode
        Episode 2
        
Line one of the second episode
        
Line two of the second episode
        
Line three of the second episode
      
    
    
      
        
Part 2
        
Some name of Part 2
      
      
        
          
Chapter 3
          
Some name of Chapter 3
        
        Episode 3
        
Line one of the third episode
        
Line two of the third episode
        
Line three of the third episode
        Episode 4
        
Line one of the fourth episode
        
Line two of the fourth episode
        
Line three of the fourth episode

I want to get the following on the output:

Part 1
Some name of Part 1
Chapter 1
Some name of Chapter 1
Episode 1
Episode 2
Part 2
Some name of Part 2
Chapter 3
Some name of Chapter 3
Episode 3
Episode 4