A compound of formula or a pharmaceutically-acceptable salt thereof, may be made by a process including a triflating step by which a ketone of formula is converted into a triflate of formula in the presence of a base comprising a tertiary or heterocyclic amine such that the pKa of the conjugate acid at 25\xb0 C. According to one embodiment, the device comprises a first connector coupled to receive a device under test and a second connector coupled to receive compressed test data by way of test equipment. The valve trim is provided with pairs of anti-cavitation notches.