1. Functional Information
2. Encoder
3. Error Correction
4. Decoder
These 4 items are basic and necessary. It is a closed system dependent on all operations to be functioning. You have information in a symbolic representation and a reading frame code. But beyond this, a formalization of semantic closure would need to be in place prior to the first cell. Put simply, a message assumes a protocol (agreement, set of rules) between the sender and the receiver, to help correctly encode and interpret the contents of the message. A simple example would be codons; they only represent amino acids if you have the system in place to interpret the functional relationship of the medium (aaRS). To state the obvious, this cannot just happen by accident.
Furthermore, the code and the functional information do not depend simply from the chemistry which allows protein synthesis. Proof-reading, error-correction, editing and splicing, are not reducible to simple chemistry. Carrying out the genetic code is not reducible to chemistry. (Of course, they need that chemistry to work, but that is all another concept.)
Moreover, the first cell would need the ability to reproduce - and the many items necessary for this to occur would need to be already encoded in the DNA. This, along with everything else, would require forethought from the very beginning. The design inference is obvious.
“If is too hard for me to uderstand” is not a valid argument.
If it cannot meet the standards of science (and any supernatural explnation cannot) it is of no use to science. You can no more apply supernatural origins to the scientific method than you can pray a 747 into a flight.
Science does not eschew God, there is simply no way to craft a methodology to accomodate Him. Rather, a wise scientist praises Him and the never ending wonders, all of which can be eventually understood and modeled, He provides. And our capability to divine and define them.