Does anyone know the formula of biodiesel? Can you tell me the specific formula? Help me. What's the ratio?

Biodiesel is a long-chain fatty acid methyl ester obtained from the decomposition and esterification of bio-oil, and it is an environmentally-friendly renewable energy source that can replace ordinary diesel. The raw material of biodiesel comes from vegetable oil (soybean oil, corn oil, rapeseed oil, palm oil, etc. ), animal oil (various animal fats), microalgae fatty acids and waste cooking oil (waste cooking oil). As a substitute for fossil fuels, biodiesel has outstanding characteristics compared with other liquid fuels such as fossil diesel and fuel ethanol: biodiesel contains no paraffin, has high flash point, higher combustion performance and efficiency than ordinary diesel, and is safer to use; At the same time, it can be continuously obtained through planting, breeding or breeding, so it belongs to renewable resources; Biodiesel products contain less sulfur and nitrogen, which can reduce the emission of SO2 and NO into the atmosphere. The fuel ethanol produced by starch crops and lignocellulose fermentation has little tail gas pollution after combustion, but its calorific value is only 2/3 of that of ordinary gasoline, which is lower than that of diesel oil, and ethanol is easy to absorb water, which reduces the combustion value. Because biodiesel has incomparable excellent characteristics with other biomass fuels, countries all over the world have developed research and industrialization of biodiesel raw materials to replace fossil fuels with decreasing reserves and serious environmental pollution.