CSc1ncc2[nH]cnc2n1 mol4904 0_1 CSc1ncc2[nH]cnc2[nH+]1 mol4904 1_1 CSc1nc2nc[nH]c2c[nH+]1 mol4904 1_2 CSc1ncc2[nH]c[nH+]c2n1 mol4904 1_3 CSc1ncc2[n-]cnc2n1 mol4904 -1_1