181305-44-2 AIDS-033423 AIDS033423 N-[2-(3-Ethoxy-6-methoxy-2-fluorophenethyl)]-N'-[2-(5-chloropyridyl)]thiourea PETT deriv. Thiourea, N-(5-chloro-2-pyridinyl)-N'-[2-(3-ethoxy-2-fluoro-6-methoxyphenyl)ethyl]-