OKC gets:
2022 first round draft pick from Detroit
Detroit's 1st round pick to Houston protected for selections 1-16 in 2022, 1-18 in 2023, 1-18 in 2024, 1-13 in 2025, 1-11 in 2026 and 1-9 in 2027; if Detroit has not conveyed a 1st round pick to Detroit by 2027, then Detroit will instead convey its 2027 2nd round pick to Houston [Detroit-Houston, 11/24/2020]
2023 first round draft pick from Washington
Washington's 1st round pick to Houston protected for selections 1-14 in 2023, 1-12 in 2024, 1-10 in 2025 and 1-8 in 2026; if Washington has not conveyed a 1st round pick to Houston by 2026, then Washington will instead convey its 2026 2nd round pick and 2027 2nd round pick to Houston [Houston-Washington, 12/2/2020]
I find the protections on that Detroit pick super peculiar. Usually protections only get less restrictive and go down (like the pick from Washington), but that Detroit one goes from 16 up to 18 down to 13, and then seems to follow a normal trend after that. Don't recall ever seeing something like that before where it goes up then down.