O=C(OCCOCCO)c1cc(C(=O)OCCOCCO)[nH]n1    mol36920    0_1
O=C(OCCOCC[O-])c1cc(C(=O)OCCOCCO)[nH]n1    mol36920    -1_1
O=C(OCCOCCO)c1cc(C(=O)OCCOCCO)[n-]n1    mol36920    -1_2
O=C(OCCOCCO)c1cc(C(=O)OCCOCC[O-])[nH]n1    mol36920    -1_3