It is related to the common nucleic acid guanosine triphosphate (GTP), with the -OH group on the 2' carbon on the nucleotide's pentose removed (hence the deoxy- part of the name), and with one fewer phosphoryl group than GTP.
This molecule is related to guanosine triphosphate (GTP), with a modified structure due to the removal of a hydroxyl group from the 2' carbon of its pentose sugar and the presence of one fewer phosphoryl group than GTP.