77642-19-4 Cyclopent(i)azacyclononadecine-7,17(8H,19H)-dione, 9,10,13,14,15,16,20,20a-octahydro-15,18-dihydroxy-19-methoxy-2-methyl-9-phenyl- Hitachimycin NSC 343256 Stubomycin