psoralens marmesin 2-(1-hydroxy-1-methylethyl)-2,3-dihydro-7H-furo[3,2-g]chromen-7-one 246.25856 A psoralen that has formula C14H14O4. Beilstein:200868 Beilstein:85846 C14H14O4 CC(C)(O)C1Cc2cc3ccc(=O)oc3cc2O1 CHEBI:49080 FWYSBEAFFPBAQU-UHFFFAOYSA-N InChI=1S/C14H14O4/c1-14(2,16)12-6-9-5-8-3-4-13(15)18-10(8)7-11(9)17-12/h3-5,7,12,16H,6H2,1-2H3 chebi_ontology