Your cueball is at one end of the table. The 2 object balls are at the other end on the table, but they are too close to each other to play off either one. So you need some kind of bank, but nothing natural is possible. Here is Caudron's very simple system for making this shot. I can't wait to try it out next time I play. And I'll be watching for this shot from Caudron in matches:
https://www.youtube.com/watch?v=tVV2SlXVjpg&t=252s
https://www.youtube.com/watch?v=tVV2SlXVjpg&t=252s