There is some conjecture that the Chinese flavors from RTS are from the same manufacturer as the Chinese super concentrates from VZ, BC and others. At any rate, I'm speaking of the SC's from VZ and there is a couple of reviews on their site that report the same as you. For me, that alcohol note isn't too bad and goes away fairly quick. A couple hours of of heat steeping does it for me or just leaving the lid off overnight, but it could be that line just isn't for you. I mention this in case you're tempted to try one of the SC's from Bull City or elsewhere, because there's a possibility that the conjecture is correct. All I really know is that the VZ Chinese Super Concentrates are alcohol based and mixed fresh you can tell.
Was your Hangsen rebottled by any chance because I've read some posts complaining of their rebottled Hangsen lacking in strength. Hangsen strength does vary some though and if you'd like a hint of a nut flavor, I'd still recommend trying some Hangsen Highway. It's available from BC in the original bottles.
Good tobacco kinda sweet? That's Rustica TA. There's a link to it here, plus it gets discussed quite a bit in that thread.
Tobacco Absolute - A Flavor All By Itself. | E-Cigarette Forum