ISSUE:

Hello, if you could help me name the following heterocycle, I would be very grateful, it complicates the choice of the base and naming the substituents which are also heterocycles, hopefully someone can clarify it for me.

Thank you for your attention <3

I look forward to your responses, Regards!

(Attached image of the exercise)

Very complex, I hope I named it correctly.
2-(3-methoxy-7,8-dihydro-1,4-dioxocin-6-yl)-4-(thiophen-2-yl)-1,2,4a,7a-tetrahydrooxazolo[ 5,4-c] pyridazine