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smiles:CN1CC(=O)N(C2=C(C1=O)NC=N2)C
Read as SMILES
read as SMILES
C
0
N
1
C
2
C
3
O
4
N
5
C
6
C
7
C
8
O
9
N
10
H
C
11
N
12
C
13
Hydrogens
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Carbon labels
✓
Atom numbers
R/S labels
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