917613-40-2

5,11,17,23-Tetraoxa-2,8,14,20-tetraazapentacosanedioic acid,2,3,8,9,14,15,20,21-octamethyl-4,7,10,13,16,19,22-heptaoxo-6,12,18,24-tetrapentyl-, 1-(1,1-dimethylethyl) 25-(phenylmethyl) ester,(3S,6R,9S,12R,15S,18R,21S,24R)-