That brings up several questions.
There are other things with complex brains, does that mean they could be (or are) conscious?
So do you think consciousness is the structure, or at least an inevitable outcome of the structure?
If consciousness spontaneously arose if we built something like that, "where" exactly is the consciousness?
"Did he have a soul Alfred? I think he did...A soul of silicon, but a soul nonetheless.."
-Batman: TASWell admittedly it's a gamble, but I think it is a largely metaphysically neutral one? I mean it's possible we recreate the structures and nothing happens, the android or whatever just lies there un-ensouled.
But if it did emulate our own existence could we really deny its claim to sentience? I mean we can't even really locate consciousness in ourselves, as the brain - not to mention the body that houses it - are also within the phenomenal experience.
As to the question of structure's relevance, I suspect there's something very important about our own structure - after all why did our nervous system evolve if qualia didn't apply any evolutionary pressure/conditioning?
Admittedly we're seeing more & more that our mental nature is dependent on far more than the nervous system (for example gut bacteria) so it's possible that consciousness is inherent to biology in some way. It will be interesting if without that gut biome synthetic life is unbalanced in some way - conscious perhaps, but alien to us without these biological aspects of our bodies...[or maybe their consciousness is "better" than ours...]
"I'd heard it said that fairies have no souls."
"Then do I ache, and bleed, and smart, elsewhere; still, call it soul for it is solely mine." -Gaiman, World's End