Exploring Butalbital. To explore a different substance…

Butalbital
5-(2-Methylpropyl)-5-(prop-2-en-1-yl)-1,3-diazinane-2,4,6-trione
 3978  C11H16N2O3  224.256
 InChI=1S/C11H16N2O3/c1-4-5-11(6-7(2)3)8(14)12-10(16)13-9(11)15/h4,7H,1,5-6H2,2-3H3,(H2,12,13,14,15,16)
 UZVHFVZFNXBMQJ-UHFFFAOYSA-N This stereoisomer Any stereoisomer
 C=CCC1(CC(C)C)C(=O)NC(=O)NC1=O