Consider compounds A, B and C with following structural formulae
\( A = \mathrm{CH_3-CH_2-CH_2-CH_2-CH_2-OH} \)
\( B = \mathrm{CH_2=CH-CH_2-CH_2-CH_3} \)
\( C = \mathrm{HO-CH_2-CH_2-CH(OH)-CH_3} \)
For the conversion of B from A, reagent \( (D) \) required is ______ and structural formula of product \( (E) \) obtained when C undergoes same reaction using excess reagent \( (D) \) is ______.