[{"from": "human", "value": "Provide a brief overview of this molecule. [C][C@][C][C][C@@H1][Branch2][Ring2][=C][C][C@][Ring1][=Branch1][Branch2][Ring2][=Branch1][C][C][C@@H1][C@@H1][Ring1][#Branch2][C][C][C@][Branch2][Ring1][=Branch2][C@][Ring1][=Branch1][C@H1][Branch1][Ring2][O][Ring1][Ring1][C][C@@H1][Ring1][=Branch1][C][=C][O][C][=Branch1][C][=O][C][=C][Ring1][#Branch1][C][O][O]"}, {"from": "gpt", "value": "The molecule is a cardiotoxic bufanolide steroid secreted by certain toads (Bufo rubescens, Bufo marinus). It is a vasoconstrictor. (L1085)"}]