3d image of phytoporphyrin skeletal formula

phytoporphyrin phylloerythrin chlorine-like porphyrin phaeophorbide tetrapyrrole phytobilins bilany heterocyclic macrocycle pyrrole metalloporphyin photodynamic therapy pdt absorb light biomarker herbal phytochemical phytotherapy plant herb natural herbalism pharmacognosy pharmacopoeia biosynthesis mechanism biosynthetic intermediate biogenesis substrate precursor synthesis derivative bioprecursor metabolic endogenous molecule molecular formula skeletal structural structure 3d biochemistry biomolecule bioactive biochemical