@horsefacts.eth
SeaportNavigator:
https://github.com/ProjectOpenSea/seaport/blob/main/contracts/helpers/navigator/SeaportNavigator.sol
Even more exciting for you, the combined bytecode was so big we couldn't get it to verify on Etherscan:
https://etherscan.io/address/0x0000f00000627D293Ab4Dfb40082001724dB006F