This is a few years after your post about the delightful fragrance of Lilium candidum.
To my knowledge there is not on offer anywhere in the industry an absolute or concrete of this flower. Goodscents maintain that some company in India offer a "Lily Absolute", but I am rather sceptical.
I am a perfume of 40+ years experience based in Brisbane Australia. I have tried to come up with various lily fragrances but never really come near the exquisite and unique aroma of *this* gorgeous flower... until now! A friend gave me a large bouquet of Madonna Lilies (Lilium candidum) and I have had them in my home perfuming the entire space for a good week now. I have been able to really analyse the aroma olfactorily and finally have come up with a formula which my Compounder weighed out today. While it takes at least twenty-four hours for a blend of aromatics to mature, at first smelling I think we are damn-near close! I think I've got it at last!
Of course the other possibility is to subject the flowers to Head-space analysis AKA "Living Flower" technology perfected by IFF. I am not aware if they have done this yet but it is hard to imagine that they have not.
Anyway, I can send you a sample of ours if you are interested.