Also, my handout lists the integration of the H NMR as 3H, 2H, 2H, 2H, 1H, 2H for the ppms at 1.2, 1.7, 2.0, 2.7, 3.2, 3.4 (respectively), but shouldn't the integration at 1.2 be 6H rather than 3H because of the 6 hydrogens at the terminal methyl branches?