2-[29-(2,3-dihydroxy-2-methylpropyl)-19-hydroxy-24-methyl-16,22,25,27,30,33,36-heptaoxo-32-(propan-2-yl)-12-thia-10,15,17,23,26,28,31,34-octaazapentacyclo[12.12.10.0^{3,11}.0^{4,9}.0^{17,21}]hexatriaconta-3(11),4,6,8-tetraen-35-yl]-2-hydroxyacetic acid