The deuteron spin-dependent structure function <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" altimg="si1.gif" overflow="scroll"><mml:msubsup><mml:mi>g</mml:mi><mml:mn>1</mml:mn><mml:mi>d</mml:mi></mml:msubsup></mml:math> and its first moment