(6S,9R,12R)-12-(mercaptomethyl)-2,2,6-trimethyl-4,7,10-trioxo-9-[[[3-[[(2R,3R,4S,5S,6R)-3,4,5-triacetoxy-6-(acetoxymethyl)tetrahydro-2H-pyran-2-yl]oxy]propyl]thio]-methyl]-3-oxa-5,8,11-triazatridecan-13-oic acid

(6S,9R,12S)-2,2,6,12-tetramethyl-4,7,10-trioxo-9-[[[3-[[(2R,3R,4S,5S,6R)-3,4,5-triacetoxy-6-(acetoxymethyl)-tetrahydro-2H-pyran-2-yl]oxy]propyl]thio]methyl]-3-oxa-5,8,11-triazatridecan-13-oic acid