How much would get me drunk?

So I don’t drink often and I’ve recently gotten a 70cl bottle of 43% gin it’s around 30 units. I’m male, 5″11 and about 65kg and 18 (I’m in the UK it is legal to drink at this age here). How much of this would I have to drink to get drunk?

PS. It’s rhubarb and ginger gin, tastes fucking mint