Showing structure for 3-{20-ethyl-5,9,14,19-tetramethyl-21,22,23,24-tetraazapentacyclo[16.2.1.1³,⁶.1⁸,¹¹.1¹³,¹⁶]tetracosa-1(20),2,4,6(24),7,9,11,13(22),14,16,18-undecaen-4-yl}propanoic acid