Retention time (min) Molecular masses m/z Relative content (%)
6.32 278 56.0, 76.0, 104.0, 149.0, 150.0 0.07
9.83 340 149.0, 161.0, 164.0, 177.0, 340.0 0.09
15.07 416 43.0, 150.0, 151.0, 416.0 1.10
15.33 416 43.0, 150.0, 151.0, 416.0 98.74