. "C10H16N5O14P3"^^ . . . . . . . . . "GTP"^^ . "guanosine 5'-triphosphoric acid"^^ . "guanosine 5'-(tetrahydrogen triphosphate)"^^ . "H4gtp"^^ . "guanosine triphosphate"^^ . "5'-GTP"^^ . "523.181"^^ . "GTP"^^ . .