prov:value
| - al with one to five carbon atoms, a phenyl radical, or R2 +R3 can be (CH2)n where n is 4 or 5; carboxy radical, an alkoxycarbonyl radical, an alkyl radical with one to five carbon atoms, or an alkoxy radical with one to five carbon atoms; and Y is a hydrogen atom, a nitro radical, a halogen atom, a formyl radical, or an alkoxy radical with one to five carbon atoms, projecting an image on said elec
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