methoxsalen (psoralen) skin disease drug molecule. used in puva therapy in combination with uva radiation

methoxsalen xanthotoxin uva puva dermatology dermatologist skin psoriasis eczema vitiligo lymphoma cancer sunlight lamp radiation psoralen furanocoumarin coumarin ammi majus bergamot carcinogen carbon hydrogen oxygen molecule atoms atomic model molecular compound composition chemical chemistry bond structure formula circle ring line drawing skeletal