```py

# Create in-memory ChromaDB client
    chroma_name = (
        f"analysis_{datetime.datetime.now().strftime('%Y%m%d_%H%M%S')}"
    )
    print(f"Chroma collection name: {chroma_name}")
    chroma_client = chromadb.EphemeralClient()
    chroma_collection = chroma_client.get_or_create_collection(chroma_name)
    # Create ChromaVectorStore
    print(f"Creating ChromaVectorStore for collection: {chroma_name}")
    vector_store = ChromaVectorStore(
        collection_name=chroma_name, chroma_collection=chroma_collection
    )
    print(
        f"ChromaVectorStore created from collection: {vector_store.collection_name}"
    )