Synonyms: 7-Oxa-3,20-diazadispiro(5.1.11.2)heneicosan-21-one, 20,20'-((2,2-bis((2-hydroxy-3-(2,2,4,4-tetramethyl-21-oxo-7-oxa-3,20-diazadispiro(5.1.11.2)heneicos-20-yl)propoxy)methyl)-1,3-propanediyl)bis(oxy(2-hydroxy-3,1-propanediyl)))bis(2,2,4,4-tetramethyl-;20-[2-hydroxy-3-[3-[2-hydroxy-3-(2,2,4,4-tetramethyl-21-oxo-7-oxa-3,20-diazadispiro[5.1.118.26]henicosan-20-yl)propoxy]-2,2-bis[[2-hydroxy-3-(2,2,4,4-tetramethyl-21-oxo-7-oxa-3,20-diazadispiro[5.1.118.26]henicosan-20-yl)propoxy]methyl]propoxy]propyl]-2,2,4,4-tetramethyl-7-oxa-3,20-diazadispiro[5.1.118.26]henicosan-21-one