[{"from": "human", "value": "Generate a molecule based on the given description. The molecule is a member of the class of pyrrolizines that is 2,3-dihydro-1H-pyrrolizine carrying an acryloyl substituent at position 5. It has a role as a mouse metabolite and a rat metabolite. It is a member of pyrrolizines, an enone and an aromatic ketone."}, {"from": "gpt", "value": "[C][=C][C][=Branch1][C][=O][C][=C][C][=C][N][Ring1][Branch1][C][C][C][Ring1][Branch1]"}]