120500-15-4 Antibiotic DC 107 DC 107 Leinamycin Spiro(1,2-dithiolane-3,6'-(19)thia(3,20)diazabicyclo(15.2.1)eicosa(1(20),9,13,15,17)pentaene)-4',5,12'-trione, 4,11'-dihydroxy-2',4,9'-trimethyl-, 2-oxide