C39H43N7OS
Exact Mass: 657.32
Mol. Wt.: 657.87
m/e: 657.32 (100.0%), 658.33 (44.1%), 659.33 (11.2%), 659.32 (4.5%), 658.32 (3.4%), 660.32 (2.1%), 660.34 (1.3%)
C, 71.20; H, 6.59; N, 14.90; O, 2.43; S, 4.87