prov:value
| - Y is a bond or R1, R2, R3, and R4 are independently selected from the group consisting of hydrogen, hydroxy, C1-10alkyl, aryl, heteroaryl, C1-10alkaryl, and aryl C1-10alkyl, wherein all nonhydrogen and hydroxy substituents may optionally be substituted from one or more of the group selected from C1-10alkyl, halogen, nitro, amino, halo1-10alkyl, C1-10alkylamino, diC1-10alkylamino, acyl, and acyloxy
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