12,13-Deepoxy-12,13-didehydro-20-deoxo-4'-deoxy-20,23-dihydroxycirramycin A1 61417-48-9 BRN 1413845 Cirramycin A1, 12,13-deepoxy-12,13-didehydro-20-deoxo-4'-deoxy-20,23-dihydroxy- Juvenimicin B3