O=C([O-])C#CC[NH+]1CCOCC1 mol8560 0_1 O=C(O)C#CCN1CCOCC1 mol8560 0_2 O=C(O)C#CC[NH+]1CCOCC1 mol8560 1_1 O=C([O-])C#CCN1CCOCC1 mol8560 -1_1