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The two double bonds between the pyrrole rings are both shown in the trans(E) configuration when they should be in the cis(Z) configuration, the configuration of double bonds should be the same as shown below.
![](http://upload.wikimedia.org/wikipedia/commons/thumb/f/f8/Bilirubin_%28CAS_635-65-4%29.svg/220px-Bilirubin_%28CAS_635-65-4%29.svg.png)