Cc1cc(N2CCOCC2)c2ccccc2n1 euroSAMPL-24 0_1 Cc1cc([NH+]2CCOCC2)c2ccccc2n1 euroSAMPL-24 1_1 Cc1cc(N2CCOCC2)c2ccccc2[nH+]1 euroSAMPL-24 1_2