Abstract: The present invention provides a compound having the structure: wherein R1 is —(C2-C12 alkyl), -(alkenyl), -(alkynyl), -(cycloalkyl); R2 is H, halogen, —NO2, —CN, —CF3, —CF2H, —CH2OCH3, —CF2CH3, —CF2OCH3, -(alkyl), -(alkenyl), -(alkynyl), -(cycloalkyl), -(cycloalkylalkyl), -(heteroalkyl), -(heterocycle), -(heterocycloalkyl), -(aryl), -(heteroaryl), -(hydroxyalkyl), -(haloalkyl), -(alkylaryl), —OH, —O-(alkyl), —O-(alkenyl), —O-(alkynyl), —O-(haloalkyl), —O-(aryl), —O-(heteroaryl), —OCF3, SH, —S-(alkyl), —S-(alkenyl), —S-(alkynyl), —S-(aryl), —S-(heteroaryl), —NH2, —NH-(alkyl), —NH-(alkenyl), —NH-(alkynyl), —N-(alkyl)2, NH-(aryl), —NH-(heteroaryl), —CO2H, —CO2-(alkyl), —C(O)—NH2, —C(O)—NH-(alkyl), —C(O)—NH-(aryl), —SO2CH3 or —Si(CH3) 3; R3 is —OCH3, —OCH2CH3, —F or —Cl; and R4 is —OCH3, —OCH2CH3 or —SCH3; wherein when R1 is —CH2CH3, R3 is —OCH3, and R4 is —OCH3, then R2 is other than H, —CH3, —CH2CH3, —CH2CH2CH3, —CH(CH3)2, —CH2CH2CH2CH3, —CH2OH, —CH(OH) CH3, —OH, —OCH2CH3, —OCH2CH2CH3, —OCH(CH3)2, —SCH3,