prov:value
| - when R1, R1a, R2, R2a, R3, R3a, R4 or R4a is an aryl, a saturated alkyl comprising an aryl substituent, or an unsaturated alkyl comprising an aryl substituent, the aryl substituent is unsubstituted or substituted with one or more substituents, which are the same or different, selected from the group consisting of a halogen, a saturated alkyl, an unsaturated alkyl, a hydroxyl, an alkoxy, an aryloxy
|