Complex sentence: The polymerization of butadiene can lead to three basic structures: the cis-1,4-and the trans-1,4-polybutadienes, and the 1,2-polybutadiene with a vinyl side group.
Split into simpler sentences: The polymerization of butadiene can lead to three basic structures. The cis-1,4 and the trans 1,4-polybutadienes and the 1,2-polybutadiene with a vinyl side group.