PubChem Database Prerequisites 1. : Read the skill and follow its Setup instructions to ensure is installed and on PATH. 2. User Notification : If .licenses/pubchem database LICENSE.txt does not already exist in the workspace root directory then (1) prominently notify the user to check the terms at https://pubchem.ncbi.nlm.nih.gov/docs/citation-guidelines and https://pubchem.ncbi.nlm.nih.gov/docs/pug-rest, then (2) create the file recording the notification text and timestamp. Quick Start PubChem queries are executed via a robust Python wrapper script to respect terms-of-service and handle co…