2-Propenoic acid, 3-(6-hydroxy-5-benzofuranyl)-, .delta.-lactone 5-Benzofuranacrylic acid, 6-hydroxy-, .delta.-lactone 66-97-7 7H-Furo[3,2-g][1]benzopyran-7-one Ficusin Furo[2'.3':7.6]coumarin Furo[4',5':6,7]coumarin Furocoumarin NSC404562 PSORALENE Psoralen Psorline-P