Knowing how and why every observable molecule in the brain does what it does says nothing about our subjective experience and never will because explaining interactions are the wrong kind of explanations to look for when explaining subjective phenomena.
The idea is that our subjective experience is likely a not so necessary by-product(many in the field seem to think it may not exist at all). Today i looked in the morror and realized i had put on some weight. So I am already on a diet, because of this vain by-product(if it exists).
This is exactly an example of what i pointed out earlier - new theories bringing less knowledge and certainty about the world, and what it is that makes us who we are(when we behave intelligently). Now somebody is going to question if intelligence is really what we think it is.