C10H21ClN2O4

Exact Mass: 268.12

Mol. Wt.: 268.74

m/e: 268.12 (100.0%), 270.12 (32.9%), 269.12 (11.7%), 271.12 (3.6%)

C, 44.69; H, 7.88; Cl, 13.19; N, 10.42; O, 23.81