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from langchain.chat_models import ChatOpenAI
from pydantic import BaseModel, Field
from langchain.document_loaders import UnstructuredURLLoader
from langchain.chains.openai_functions import create_extraction_chain_pydantic
class LLMItem(BaseModel):
title: str = Field(description="The simple and concise title of the product")
description: str = Field(description="The description of the product")
def main():