code: def replace_duplicate_definitions(string: str) -> str:
      """In Latex there are many commands that are interchangeable. Use just one of them"""
      for pair in syn:
          string = string.replace(pair[0], pair[1])
      return string
  
file_path: nougat/nougat/dataset/utils/latex_conversion.py
imports: import re
  from pylatexenc.latexencode import UnicodeToLatexEncoder
  from pylatexenc.latex2text import LatexNodes2Text
  from unidecode import unidecode
label_desc: Use image node_id 2 for calling a global function with example usage: replace_duplicate_definitions(string) and returns: string