CA 1001;diethyl 13,17,18,22-tetramethyl-14,21-dioxo-16,19-dioxa-13,22-diazatetratriacontane-1,34-dioate;7-(12-ethoxy-12-oxododecyl)-7-(11-ethoxy-11-oxoundecyl)-2,3,10-trimethyl-6,11-dioxo-1,4-dioxa-10-aza-7-azoniacyclododecane
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