Fig. 3

Reference Standard 1: m/z 301.03540, 271.06119, 463.08710, 273.07684, 287.05611, 315.05102, 431.09837, 668.01444; Reference Standard 2: m/z 191.01972, 173.00916, 593.13006, 263.12888; Reference Standard 3: m/z 328.04524, 289.07176, 187.09758, 163.04006, 179.03498.