0 B19R0.59662 O=C(O)CN(CCN(CC(=O)O)CC(=O)O)CC(=O)O E69373 [0,0,0,0,0,0|0,0,0]=0 1 B19R0.59662 O=C([O-])CN(CCN(CC(=O)O)CC(=O)O)CC(=O)[O-] E69225 [0,0,0,0,0,0|0,0,2]=2