Nadir Blue

1 2/3 oz gin
1/3 oz cherry brandy
2/3 oz lemon juice
2/3 oz strawberry syrup
1/2 oz grenadine syrup
2 tsp pineapple juice
2 1/2 oz soda water
2/3 oz Blue Curacao liqueur

Pour the gin, cherry brandy, lemon juice, strawberry syrup, grenadine and pineapple juice into a cocktail shaker half-filled with ice cubes. Shake well, strain into a highball glass filled with ice cubes, and fill with soda water. Pour the blue curacao into the middle. Garnish with a slice of pineapple, and serve.