N-(21-benzoyl-29-ethylidene-13,14,23-trihydoroxy-35-isopropyl-19,32-dimethyl-3,9,20,28,31,34,37,38-octaoxo-33-oxa-2,8,10,19,22,27,30,36-octaazatetracyclo(16.13.6.1(22,26).0(11,16))octatriaconta-11,13,15-trien-4-yl)isobutyramide