The chemical with the SMILES O=C(Cn1nc(-c2ccccc2)c2ccccc2c1=O)Nc1ccccn1 is not an inhibitor of the protein kinase A (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=C(Cn1nc(-c2ccccc2)c2ccccc2c1=O)Nc1ccccn1
O=C(Cn1nc(-c2ccccc2)c2ccccc2c1=O)Nc1ccccn1
2-(1-oxo-4-phenylphthalazin-2-yl)-N-pyridin-2-ylacetamide