C/N=C(\NC#N)NCCSCc1csc(N=C(N)N)n1    mol21666    0_1
C/N=C(\NC#N)NCCSCc1csc([NH+]=C(N)N)n1    mol21666    1_1
C/[NH+]=C(\NC#N)NCCSCc1csc(N=C(N)N)n1    mol21666    1_2
C/N=C(\NC#N)NCCSCc1csc(N=C(N)N)[nH+]1    mol21666    1_3