Propose ranked one-step (default) or short multi-step retrosynthetic disconnections and building-block SMILES with AiZynthFinder, using a public USPTO expansion policy and ZINC stock. Ranked routes are not a guaranteed synthesis plan.
Default depth is one reaction step. Deeper search and longer per-target time increase compute.
Paste target SMILES, one per line, or upload a .smi / .txt file. At most 500 molecules. Unsolved targets remain as rows; the job still completes.