You can run it, may throw your O2 sensor off and your gas mileage will suck. Your car is brand new, so there shouldn't be any old sludge in the tank to worry about - E85 can act like a solvent to old gunk which when loosened can clog a fuel filter, but again you need not worry about that with a new car.
I would drain it. The E85 may damage your fuel system.
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