NSC-305263

fredericamycin A

6',7'-Dihydro-4,9,9'-trihydroxy-6-methoxy-3'-[(1E,3E)-1,3-pentadienyl]spiro[2H-benz[f]indene-2,8'-[8H]cyclopent[g]isoquinoline]-1,1',3,5,8(2'H)-pentone