NCC1(Cc2n[nH]c(=O)o2)CCCCC1 mol18063 0_1 NCC1(Cc2[nH+][nH]c(=O)o2)CCCCC1 mol18063 1_1 [NH3+]CC1(Cc2n[nH]c(=O)o2)CCCCC1 mol18063 1_2