Dear Musk, Im not familiar with the L'Occitane scent you describe, but you will be hard pressed to find ANY perfume on the mainstream market that is 100% natural.
Of course you can approach natural botanical perfumers such as the Scented Djinn, who can sell or make you something non-synthetic.
The only house that I can think of, on the mainstream market that guarantee their scents "86.5%" natural is Korres. This is quite high, compared to the majority of perfume releases.
Click here to read more on their product: http://www.basenotes.net/showthread....ghlight=korres
(Specifically my post #7 with photos).