SakshamRaj1/ChemSmileAI ? reverse-engineered prompt

Build me a web app called ChemSmileAI for chemical analysis and similarity search. I want a clean, responsive site where someone can paste a SMILES string, a CHEMBL ID, or draw a molecule in the browser, then instantly see the structure, basic molecule info, fingerprints, descriptors, scaffold analysis, and a 2D or 3D view. It should also let users compare two molecules side by side, search for similar compounds from a local CHEMBL based dataset, and edit or replace fragments in a molecule.

Please make it fully offline and local, with a simple Flask based backend and modern frontend pages that feel polished and easy to use. Include download options for common chemical file formats and exportable images or reports. If you need to look up current docs online for RDKit, Ketcher, or any related libraries, go ahead. I’d like the final result to be something a researcher or student can use without needing to code.