16,19-Dioxa-13,22-diazatetratriacontanedioic acid, 13,17,18,22-tetramethyl-14,21-dioxo-, diethyl ester, (R-(R*,R*))- 58801-34-6 Diethyl (R-(R*,R*))-13,17,18,22-tetramethyl-14,21-dioxo-16,19-dioxa-13,22-diazatetratriacontanedioate EINECS 261-449-8 Eth 1001