IUPAC:methyl (1R,1'R,7S,11R,12'R,13R,15S,16'S,22'R,24R,25S)-24-hydroxy-19-methoxy-8,15'-dioxa-4,8',17,19'-tetraazaspiro[heptacyclo[11.10.1.1^{1,4}.0^{7,11}.0^{17,24}.0^{18,23}.0^{11,25}]pentacosane-15,17'-hexacyclo[10.9.1.0^{1,9}.0^{2,7}.0^{12,16}.0^{19,22}]docosane]-2'(7'),3',5',9',18(23),19,21-heptaene-10'-carboxylate
IUPAC:methyl (1R,1'R,7S,11R,12'R,13R,15S,16'S,22'R,24R,25S)-24-hydroxy-19-methoxy-8,15'-dioxa-4,8',17,19'-tetraazaspiro[heptacyclo[11.10.1.1^{1,4}.0^{7,11}.0^{17,24}.0^{18,23}.0^{11,25}]pentacosane-15,17'-hexacyclo[10.9.1.0^{1,9}.0^{2,7}.0^{12,16}.0^{19,22}]docosane]-2'(7'),3',5',9',18(23),19,21-heptaene-10'-carboxylate