p;ease draw formula of glucosamine sulfate

Ten seconds with Yahoo brought up sites with your answer.

Or you can go off the name... look up glucose, attach an amine at carbon 2 (not apparent from the name), and since it's the sulfate form make the amine charged and include a sulfate ion.

I'm guessing you need this for a class. Do the work. Nobody will be able to help you on a test, so always better to struggle it out.

In this case, as mentioned, a quick Yahoo or Google search was all you needed. Keywords structure or formula can narrow your list down.