7-Demethyl-64-O-demethyl-19-deoxy-22,31-dichlororistomycin A aglycone 89139-42-4 A41030B Antibiotic A 41030B Antibiotic L 17392 Ristomycin A aglycone, 22,31-dichloro-7-demethyl-64-O-demethyl-19-deoxy- Ristomycin A aglycone, 7-demethyl-64-O-demethyl-19-deoxy-22,31-dichloro- TD-A3 Teicoplanin aglycone