arxiv==1.4.3 PyMuPDF==1.21.1 requests==2.26.0 tiktoken==0.2.0 tenacity==8.2.2 pybase64==1.2.3 Pillow==9.4.0 markdown mistune gradio==3.50.2 google-generativeai==0.3.1 pydantic==1.10.7 #tiktoken