The chemical with the SMILES O=C1OCCC1Sc1ncnc2sccc12 is not an inhibitor of PKA.
The {#molecule|compound|chemical|molecular species|chemical compound!} with the {SMILES__description} {#representation of |!}{SMILES#} is {MUV-548#not &NULL}{MUV-548__names__noun}.
O=C1OCCC1Sc1ncnc2sccc12
O=C1OCCC1Sc1ncnc2sccc12
3-thieno[2,3-d]pyrimidin-4-ylsulfanyloxolan-2-one