Compound 1b

Octyl (2S)-2-{[13,20,27,34,41-pentakis({[(2S)-1-(octyloxy)-1-oxopropan-2-yl]carbamoyl})heptacyclo[37.3.1.1^4,8.1^11,15.1^18,22.1^25,29.1^32,36]octatetraconta-1(43),4,6,8(48),11,13,15(47),18,20,22(46),25,27,29(45),32,34,36(44),39,41-octadecaen-2,9,16,23,30,37-hexayn-6-yl]formamido}propanoate

From: Self-assembling subnanometer pores with unusual mass-transport properties