– Melanotan (MT)-II, a synthetic melanocortin receptor agonist, is an injectable peptide hormone used to promote tanning.
– O=C1[C@]([H])(C([H])([H])C([H])([H])C([H])([H])/N=C(N([H])[H])/N([H])[H])N([H])C([C@@]([H])(C([H])([H])C2C([H])=C([H])C([H])=C([H])C=2[H])N([H])C([C@]([H])(C([H])([H])C2=C([H])N=C([H])N2[H])N([H])C([C@]([H])(C([H])([H])C(N([H])C([H])([H])C([H])([H])C([H])([H])C([H])([H])[C@@]([H])(C(N([H])[H])=O)N([H])C([C@]([H])(C([H])([H])C2=C([H])N([H])C3=C([H])C([H])=C([H])C([H])=C23)N1[H])=O)=O)N([H])C([C@]([H])(C([H])([H])C([H])([H])C([H])([H])C([H])([H])[H])N([H])C(C([H])([H])[H])=O)=O)=O)=O)=O