Showing structure for 3-[1,10-dihydroxy-6-isopropyl-5,8,9-trimethyl-4,7,14,17-tetraoxo-3-(sec-butyl)-3h,6h,9h,12h,13h,16h,19h,20h,21h,22h,22ah-pyrido[1,2-d]1-oxa-4,7,10,13,16-pentaazacyclononadecan-16-yl]-2-methylpropanoic acid