For these measurements,
electrospray ionization (ESI+) was used with the source operation
parameters set as follows: Capillary voltage: 3.0 kV, Cone voltage:
12.0 V, Collision Energy: 13 eV, source temperature: 150°C and
desolvation temperature: 400°C. The desolvation gas was set at
1000 L/h and cone gas at 20 L/h. The Precursor ion was optimized
at 175.65 and the Product ion 129.8.