Telegram AI bot with LangChain nodes

This workflow connects Telegram bots with LangChain nodes in n8n. The main AI Agent Node is configured as a Conversation Agent. It has a custom System Prompt which explains the reply formatting and provides some additional instructions. The AI Agent has several connections: OpenAI GPT-4 model is called to generate the replies Window Buffer Memory stores the history of conversation with each user separately There is an additional Custom n8n Workflow tool (Dall-E 3 Tool). AI Agent uses this tool when the user requests an image generation. In the lower part of the workflow, there is a series of nodes that call Dall-E 3 model with the user Telegram ID and a prompt for a new image. Once image is

Help me set up the n8n workflow "Telegram AI bot with LangChain nodes" (https://n8n.io/workflows/2035). It uses: HTTP Request, Telegram, AI Agent, OpenAI Chat Model, Simple Memory, Call n8n Workflow Tool. Import the template JSON into my n8n instance, list every credential I need to create, and walk me through testing it.