```\nfunction launch() external onlyOwner {\n    require(!launched, "VoxNET: already launched");\n\n    require(pair != address(0), "VoxNET: DEx pair address must be set");\n    require(\n        ecosystemFeeReceiver != address(0) &&\n            marketingFeeReceiver1 != address(0) &&\n            marketingFeeReceiver2 != address(0) &&\n            treasuryFeeReceiver != address(0),\n        "VoxNET: fee recipient addresses must be set"\n    );\n\n    launched = true;\n    tokenPriceTimestamp = block.timestamp;\n}\n```\n