2-({2-[({2-[(1S,2R,11R,13S,16S,22S,25R,32S,39S,42S,53R,58S)-13-(but-2-yl)-42-[(2R,3R)-2,3-dihydroxybut-2-yl]-35-[(1E)-ethylidene]-58-hydroxy-7-[(1S)-1-hydroxyethyl]-32-[(1R)-1-hydroxyethyl]-2,16,22-trimethyl-19-methylidene-4,14,17,20,23,30,33,40,47-nonaoxo-3-oxa-12,15,18,21,24,31,34,41,48,54,60,61,62,63,64-pentadecaza-27,37,44,50-tetrathianonacyclo[23.23.9.35,11.149,52.126,29.143,46.136,39.025,53.08,59]tetrahexaconta-5(6),7,9,26(64),28,36(63),43(62),45,49(61),51,54,59(60)-dodecaen-55-yl]-1,3-thiazol-4-yl}carbonyl)amino]-1-oxoprop-2-enyl}amino)prop-2-enamide