This H plus will basically create a bond here while this carbon dioxide molecule shown in blue will be released into the environment in the gas form. So we have this CO2 molecule in the gas form and we have this molecule basically this entire structure plus this H. And this is known as acetyl aldehyde. Now, this is the first step. And in the second step, this is when we actually produce that ethanol. So in the first step, we have the decarboxylation reaction catalyzed by pyruvate decarboxylase the coenzyme Thiamine pyrophosphate, which is a Thiamine derivative. So Thiamine vitamin is the vitamin B one.