OChem - NMR question/brain teaser?

Compound Y has only two singlets in its H NMR spectrum, at 1.42 and 1.96, with relative intensities of 3:1. Its Carbon 13 NMR spectrum has signals at 22.3, 28.1, 79.9, and 170.2. The important bands in the infrated spectrum are at 1738, 1256, and 1173 cm-1. Propose a structure of this compound that can be justified by the given pectral data.