Yes and no. Yes the system is logical and systematic. However, there are tons of named groups and then there are groups of groups and they all have different and arbitrary priority rules. It's actually quite a clusterfuck for what it does and doesn't really have any real purpose on mildly complex molecules.

Nobody in it's right mind will ever call it by it's real name except maybe to sound more intelligent. Most important molecule have short names either based on the standard or given names.