nx_chem_tadalafil_probe_test.nx

nx_chem_tadalafil_probe_test.nx -- SMILES parser probe. HONEST RESULT (2026-05-20): Parser HANDLES the complex SMILES (multi-ring-closure + reuse + benzodioxole bridging + ring-3 closure spanning a branch). However the SMILES BYTES below were a manual transcription that turned out to NOT represent canonical tadalafil structure: Parser computed: C21H?N3O5 (21 C + 5 O) Tadalafil real: C22H19N3O4 (22 C + 4 O) So this probe demonstrates the PARSER works on complex pharma-class SMILES; it does NOT validate tadalafil specifically. Tadalafil deferred to C10.3 pending verified canonical SMILES from PubChem CID 110635. Probe retained as monitor: if parser breaks on this SMILES in future, regression will fail. Original (mistaken) SMILES: O=C1N(C)C(=O)CN1C1c2cc3c(cc2C2NC1c1ccc(OC)cc1)OCO3 Real tadalafil canonical: CN1CC(=O)N([C@@H]([C@H]2C3=CC=CC=C3NC2)C4=CC5=C(C=C4)OCO5)C1=O expect_exit: 0 license_tier: ORIGINAL