2,2'-Dimethyl-5-adamantyloxazolidine-N-oxyl 4,4-Dimethylspiro(oxazolidine-2,2'-tricyclo(3.3.1.13,7)dec)-3-yloxy 55204-70-1 Adamantyl nitroxide Spiro(oxazolidine-2,2'-tricyclo(3.3.1.13,7)dec)-3-yloxy, 4,4-dimethyl-