[{"from": "human", "value": "Provide a description of this molecule. [C][N][C][C][C@@][C@@H1][N][C][=C][C][=C][C][=C][Ring1][=Branch1][C@@][Ring1][#Branch2][Branch1][S][C@@H1][Ring1][=C][N][C][=C][C][=C][C][=C][Ring2][Ring1][C][Ring1][=Branch1][C][C][N][Ring2][Ring1][Ring2][C]"}, {"from": "gpt", "value": "The molecule is the principal alkaloid of the plant family Calycanthaceae. It is a calycanthaceous alkaloid, an aminal and an organonitrogen heterocyclic compound. It derives from a hydride of a calycanine."}]