3-Oxa-6,9,12-triazatetradecan-14-oic acid,7-[[4-[(diethoxyphosphinyl)oxy]phenyl]methyl]-6,9,12-tris[2-(1,1-dimethylethoxy)-2-oxoethyl]-2,2-dimethyl-4-oxo-, 1,1-dimethylethyl ester
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