Compound 1a

(6S,9S,15S,18S,21S,24S,27S,30S,33S,36S,42S,45S,48S)-18,45-Bis(4-azaniumylbutyl)-27,30-dibenzyl-6-[(2S)-butan-2-yl]-9,36-bis(2-carboxyethyl)-54-methoxy-33-methyl-21,48-bis(2-methylpropyl)-3,4,7,10,16,19,22,25,28,31,34,37,43,46,49,52-hexadecaoxo-24-(propan-2-yl)-2,5,8,11,17,20,23,26,29,32,35,38,44,47,50,51-hexadecaazabicyclo[51.3.1]heptapentaconta-1(56),53(57),54-triene-15,42-bis(aminium)tetratrifluoroacetate

From: Amyloid β-sheet mimics that antagonize protein aggregation and reduce amyloid toxicity