(1R,4R,7S,10R,27R,28S,31S)-10-{[(2R)-4-methyl-2-(methylamino)-1-oxopentyl]amino}-50-{[(2S,3R,4S,5S,6R)-3-{[(2S,4S,5S,6S)-4-amino-5-hydroxy-4,6-dimethyl-3,4,5,6-tetrahydro-2H-pyran-2-yl]oxy}-4,5-dihydroxy-6-(hydroxymethyl)-3,4,5,6-tetrahydro-2H-pyran-2-yl]oxy}-7-(carbamoylmethyl)-24,47-dichloro-27,34,36,39-tetrahydroxy-3,6,9,29,43-pentaoxo-16,22-dioxa-2,5,8,30,44-pentazaoctacyclo[26.14.2.212,15.223,26.117,21.138,42.04,19.032,37]pentaconta-12(48),13,15(47),17(18),19(20),21(50),23(46),24,26(45),32(33),34,36,38(39),40,42(49)-pentadecaene-31-carboxylic acid