Google patents

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Copy & paste the patterns below to the search bar in google patents (https://patents.google.com)

Similarity search:

~SMILES=c2ccc1CNCc1c2

Substructure searching by SMILES:

SSS=SMILES=c2ccc1CNCc1c2

Substructure searching by SMARTS:

SSS=SMARTS=[ND2]S(=O)(=O)c1cccc(Cl)c1[OD1]