| http://www.w3.org/ns/prov#value | - A compound of Claim 1 having the formula Ia and pharmaceutically acceptable salts thereof : Ia wherein A is O or C (O) ; one of X is a ring carbon or nitrogen atom, and the others are ring carbon atoms; D is C (O) R4, C (O) NRdR4 or C (O) OR4 ; Rla and Rib are independently selected from hydrogen, halogen, Cl 4alkyl, cyano, SRa, ORa and CF3 ; R2a and R3a are independently H or halogen; R4, Ra and
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