L-Asp7 Linaclotide Impurity

Chemical Name: 3-(25-Amino-6-((1-carboxy-2-(4-hydroxyphenyl)ethyl)carbamoyl)-38-(2-carboxyethyl)-35-(4-hydroxybenzyl)-12-(1-hydroxyethyl)-8,11,14,22,24,32,34,37,40-nonaoxo-15-(2-propionamidopropanamido)-3,4,17,18,27,28-hexathia-7,10,13,23,31,33,36,39-octaazabicyclo[18.12.8]tetracontane-30-carboxamido)-4-cyclopentyl-4-oxobutanoic acid

Smile: OC1=CC=C(CC(NC(C(NC(CNC(C(C(O)C)NC(C(CSSCC(CC(N2)=O)C3=O)NC(C(NC(CC)=O)C)=O)=O)=O)=O)CSSCC(NC(C(NC(C(N3)CCC(O)=O)=O)CC4=CC=C(O)C=C4)=O)C(NC(CSSCC(N)C2=O)C(NC(CC(O)=O)C(C5CCCC5)=O)=O)=O)=O)C(O)=O)C=C1