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smiles:CC1=NN(C2=C(C(=O)C2=O)N(N1)C)C
Read as SMILES
read as SMILES
C
0
C
1
N
2
N
3
C
4
C
5
C
6
O
7
C
8
O
9
N
10
N
11
H
C
12
C
13
Hydrogens
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Carbon labels
✓
Atom numbers
R/S labels
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