Hi! I've done some research and entering it in ITA, and then using power tools to get to Kayak (based on 4 segments), I was eventually able to get the AC3MECN code to price in Orbitz for 575$. The problem is that even though Orbitz shows the "right" booking classes (A / H), they just call the whole booking Economy.. so I wouldn't know what would end up happening to your booking..