1-(7,7-dimethyl-6,8-dioxaspiro[3.5]non-2-yl)-5-methylpyrimidine-2,4(1H,3H)-dione 2,4(1H,3H)-pyrimidinedione, 1-(7,7-dimethyl-6,8-dioxaspiro[3.5]non-2-yl)-5-methyl- InChI=1/C14H20N2O4/c1-9-6-16(12(18)15-11(9)17)10-4-14(5-10)7-19-13(2,3)20-8-14/h6,10H,4-5,7-8H2,1-3H3,(H,15,17,18