C1CC2C1CC2
c1cccn(=O)c1
C
CC
C-C
C=C
[CH2+]C[CH+2]
C1CC1
C1CC=1
C=1CC1
C=C-O
C1CC1
C1NC1
C1=CC1
C1CCC1
CC(C)CC
CC(=O)O
C1C(=O)C1
C1C(N)C1
CC(O)C
OC=CCC
CC([O-])O
C1CC2C1CC2
Cl/C=C/Cl
Cl/C=C/Cl
C1CC.CC1
C1C(C2CC2).C2CC2C1
[Na+].[Cl-].[NH4+].[Cl-]
C[35Cl]
C%10CC%10
[H][H]
[H+]
C[N+](=O)[O-]
N1C(=N)SC=C1
[O-][N+](=O)C1=CNC(=N)S1
CN(=O)=O
C1=CC=C[N+]([O-])=C1
C1=CC=CN(=O)=C1
  C1=CC=CN(=O)=C1
C1=CC=CN(=O)=C1  
  C1=CC=CN(=O)=C1  
C1=CC=CN(=O)=C1
c1ccccc1[*]
c1ccccc1[1*]
S1cccc1
*1ccccc1
C1=CC=CC=C1
*1=CC=CC=C1
*1*cccc1
*1**ccc1
c1ccc[se]1
c1ccc[te]1
C0CC0
C/C(/C=C2\Sc1ccc(cc1N\2C))=C5\SC4=NccN4C\5=O
[HH]
[2HH]
[HH2-]
[2HH2-]
b1ccccc1
C[Rf]C
[C:1]
[C:0]
[si]1cccc[si]1
[asH]1cccc1
[Uun][Uuu][Uub][Uut][Uuq][Uup][Uuh][Uus][Uuo]
[Db][Sg][Bh][Hs][Mt][Ds][Rg][Cn][Nh][Fl][Mc][Lv][Ts][Og]