The molecule on the right is the same as the molecule on the left, yet no stereochemistry has been provided to us, so we can assume that the chirality is ambiguous and it is a 1:1 mixture of enantiome...The molecule on the right is the same as the molecule on the left, yet no stereochemistry has been provided to us, so we can assume that the chirality is ambiguous and it is a 1:1 mixture of enantiomers (racemic mixture). The top half of the molecule would rotate the molecule in one direction while the bottom half of the molecule (since it is a mirror image) would rotate it the opposite way.