afamelanotide molecule, molecular structures, synthetic peptide, 3d model, structural chemical formula and atoms with color coding

afamelanotide scenesse synthetic peptide molecule molecular structure chemical formula model c78h111n21o19 atom cancer chemistry composition drawing alpha hormone ultraviolet pigmentation stimulating compound counterfeit flat melanocyte melanogenesis vitiligo skin skeletal icon photoprotective epp erythropoietic melanocortin melanotan photoprotection carbon oxygen hydrogen sun atomic nitrogen drug breast structures structural atoms color coding coding