Impossible, because many countries don't have many gold reserves now. Moreover, the US dollar is now an international currency, and central banks in many countries have a large amount of US dollar reserves. Therefore, at present, most oil trade is conducted in the form of dollar oil settlement. Moreover, Iran does not have much gold reserves now, and it is impossible to settle in this way. So it is very effective for the United States to impose economic sanctions on Iran.

Moreover, Iran's economic downturn is serious, and domestic inflation is very serious. If the trade settlement can no longer be made in US dollars, the Iranian economy will face the risk of collapse. If it is serious, it will lead to a very unstable situation in Iran. There may even be civil strife and conflict. But we should also see that Iran is now actively settling trade through other currencies. Because it can alleviate Iran's economic pressure.

But we can also see that the United States, as the most powerful country in the world, has very effective sanctions against Iran. If Iran succumbs to the United States, it will make the United States the most influential force in the Middle East. Because the main contradiction between Iran and the United States now is to compete for the dominance of the Middle East, Iran wants to become the most influential country in the Middle East. However, the United States and its allies will never let Iran become such a country, because it will bring huge losses to the United States and its allies.

Of course, we should also see that Iran does not have rich foreign exchange reserves, which makes it unable to cope with the economic sanctions imposed by the United States, so now Iran will seek direct currency transactions with other countries.