( )-Jatrophone, a natural product isolated from the flowering plant Jatropha gossypiifolia, is known to function as a tumor inhibitor and has been used to treat cancerous growths. As part of the first total synthesis4 of ( )-jatrophone, compound 1 was prepared and then treated with compound 2 in the presence of Pd(PPh3)4 to give compound 3. Draw the structure of compound 3.