IUPAC:(1Z,3E,5R,8S,10S,11S,13R,15R,16R,18Z)-11-ethyl-2,24-dihydroxy-10-methyl-21,26-diazapentacyclo[23.2.1.0^{5,16}.0^{8,15}.0^{9,13}]octacosa-1,3,18-triene-7,20,27,28-tetrone
IUPAC:(1Z,3E,5R,8S,10S,11S,13R,15R,16R,18Z)-11-ethyl-2,24-dihydroxy-10-methyl-21,26-diazapentacyclo[23.2.1.0^{5,16}.0^{8,15}.0^{9,13}]octacosa-1,3,18-triene-7,20,27,28-tetrone