The chemical environment of protons can be deduced from their chemical shifts. What are the relative chemical shifts of the protons at the labeled positions? $[$Protons that are highly shielded have low delta $($chemical shift$)$ values.$]$

The proton with the lowest delta value $($the most shielded$)$ is The proton with the highest delta value $($the most deshielded$)$ is

The proton with the lowest delta value $($the most shielded$)$ is

The proton with the highest delta value $($the most deshielded$)$ is

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