1,4-Ethano-1H-2-benzopyran-7-carboxamide, 6-amino- 3,4,5,8-tetrahydro-4,9-dihydroxy-3-methyl-5,8-dioxo-, (1.alpha.,3.beta.,4.beta.,9R*)- 75533-14-1 NSC337587 Sarubicin A