A French 28 Derivation

Last night I made a new cocktail derived from the French 28, a champagne cocktail from the restaurant 28 Degrees. Lacking champagne, I cut that out of the mix. I also wasn't in the mood for Chambord, so I used grenadine instead. And, since I didn't have any lemons I used lime juice.

2 oz Bombay Sapphire gin
1 oz Cointreau
0.5 oz grenadine
0.5 oz lime juice

The cocktail had a mellow flavor, maybe because I used Bombay Sapphire instead of Plymouth. Using the grenadine instead of the Chambord cuts down the alcohol content but maintains the sweetness. While the cocktail had a sweet and sour tartness, it was slightly more sweet, but that might be because I used a touch more grenadine than 0.5 oz.

I did a quick search for cocktails made with these ingredients and I didn't find any, so maybe I have another cocktail to name. How about a Pink Sapphire? (But I guess that only works if it's always made with Bombay Sapphire.)