ESI-MS: (signal), 2.45C2.25 (m, 2H), 2.05C1.75 (m, 3H), 1.53C1.37 (m, 1H), 1.02C0.93 (m, 3H); ESI-MS: (transmission), 2.08C1.93 (m, 2H), 1.90C1.75 (m, 1H), 1.60C1.35 (m, 1H), 1.04C0.91 (m, 3H); 13C NMR (101 MHz, DMSO-signal), 2.09C1.96 (m, 2H), 1.92C1.76 (m, 1H), 1.60C1.36 (m, 1H), 1.02C0.90 (m, 3H); 13C NMR (101 MHz, DMSO-signal), 2.41C2.23 (m, 2H), 2.12C1.77 (m, […]