3-[20-(2-carboxyethyl)-10,15-bis(1-hydroxyethyl)-5,9,14,19-tetramethyl-21,22,23,24-tetraazapentacyclo[16.2.1.1^{3,6}.1^{8,11}.1^{13,16}]tetracosa-1(20),2,4,6(24),7,9,11,13(22),14,16,18-undecaen-4-yl]propanoic acid
3-[20-(2-carboxyethyl)-9,14-bis(1-hydroxyethyl)-5,10,15,19-tetramethyl-21,22,23,24-tetraazapentacyclo[16.2.1.13,6.18,11.113,16]tetracosa-1,3,5,7,9,11(23),12,14,16,18(21),19-undecaen-4-yl]propanoic acid