Is oxytocin's mirror image still oxytocin?
Oxytocin is composed of $\alpha$-amino acids, which with the exception of one (glycine), are all chiral. A chiral molecule's mirror image is called its enatiomer, and has identical chemical properties except in the presence of other chiral molecules, i.e. in the body. This means enantiomer of oxytocin does not have the same biochemical activity as oxytocin, so you were wise to question whether or not this would be the same molecule. In addition to flipping the molecule, you need to change the wedges to dashes and dashes to wedges for it to still be the same molecule: