The Chemical Structure Generator From Name will produce the following structures:

1. Keratin Sulfate: A complex glycosaminoglycan, typically represented as a branched structure with repeating disaccharide units of galactose and N-acetylgalactosamine, with sulfate groups attached.

2. Chondroitin Sulfate: A linear polysaccharide composed of repeating disaccharide units of glucuronic acid and N-acetylgalactosamine, with sulfate groups on the galactosamine residues.

3. Dopamine: A catecholamine neurotransmitter with a structure consisting of a benzene ring with two hydroxyl groups and an ethylamine side chain.

For precise molecular representations, please use the Chemical Structure Generator tool to visualize and export these structures in your desired format.