1 ROL Rolipram 1.000 2 RLW 3-(3-cyclopentyloxy-4-methoxy-phenyl)-4,4-dimethyl-1~{H}-pyrazol-5-one 0.826 3 0CP 5-{3-[(1s,2s,4r)-bicyclo[2.2.1]hept-2-yloxy]-4-methoxyphenyl}tetrahydropyrimidin-2(1h)-one 0.792 4 863 5-(3-(cyclopentyloxy)-4-methoxyphenyl)-2-isopropyl-4,4-dimethyl-2,4-dihydro-3h-pyrazol-3-one 0.731