Design a molecule that is not an inhibitor of the protein kinase A (PKA) and report its SMILES.
Result: COC(=O)CC1NCCNC1=O
{#Create|Generate|Propose|Suggest|Design|Invent!} a {#molecule|compound!} that is {MUV-548#not &NULL}{MUV-548__names__noun} and report its {SMILES__description}.
Result: {SMILES#}
COC(=O)CC1NCCNC1=O
COC(=O)CC1NCCNC1=O
3-(2-methoxy-2-oxoethyl)piperazin-2-one