3-methyl-2-oxobutanoate + formaldehyde => 2-dehydropantoate
3-methyl-2-oxobutanoate + formaldehyde => 2-dehydropantoate
3-methyl-2-oxobutanoate + formaldehyde => 2-dehydropantoate
3-methyl-2-oxobutanoate + formaldehyde => 2-dehydropantoate