I guess this just demonstrates what you know about DNA and molecular biology.
Unless you are asserting DNA structures are formed and controlled by magic rather than electron configurations, then it's not clear what your objection is.
The point is that just as snowflakes can acquire complex and macroscale structures without an "intelligent designer" so too can other chemical structures arise.
Since we know DNA exists, you have a long haul to prove impossibility of natural events. Begin.