What polymers have the most complex and diverse three-dimensional structures?

Proteins are among the polymers with the most complex and diverse three-dimensional structures due to their unique sequences of amino acids, which can fold into intricate shapes essential for their biological functions. Nucleic acids, like DNA and RNA, also exhibit complex structures, including double helices and various secondary and tertiary formations that are crucial for genetic information storage and transfer. Additionally, polysaccharides can form diverse structures, such as branched or linear configurations, influencing their functional properties in biological systems.