[{"from": "human", "value": "Provide a description of this molecule. [C][Branch1][#Branch1][C][C][=Branch1][C][=O][O][C][=Branch1][C][=O][C][N]"}, {"from": "gpt", "value": "The molecule is an intermediate in heme synthesis. This is the first compound in the porphyrin synthesis pathway. It is produced by the enzyme ALA synthase, from glycine and succinyl CoA. This reaction is known as the Shemin pathway. Aminolevulinic acid plus blue light illumination using a blue light photodynamic therapy illuminator is indicated for the treatment of minimally to moderately thick actinic keratoses of the face or scalp."}]