[H]C12CC(O)CCC1(C)C1([H])CC(O)C3(C)C([H])(C(C)CCC(=O)O)CCC3([H])C1([H])C(O)C2
DRUGMATRIX assay inhibits PDE5 enzyme (substrate: [3H]cGMP + cGMP) and targets a single protein. It uses human platelet cells and is an in vitro binding assay. Does the molecule work for this assay?