serotonin neurotransmitter molecule. stylized 2d renderings and conventional skeletal formula

serotonin neurotransmitter molecule stylized 2d renderings conventional skeletal formula serotonine 5hydrotryptamine monoamine tryptophan gastrointestinal tract blood platelets central nervous system happiness wellbeing enterochromaffin antidepressant platelet hemostasis clotting antiemetic hydrogen carbon nitrogen oxygen atoms atomic model molecular compound composition chemical chemistry bond structure circle ring line drawing vector