Chapter SRP, Problem 23P

What are compounds A and B? Compound B has a strong IR absorption band in the 1650–1730 ${\text{cm}}^{-1}$ region and a broad strong band in the 3200–3550 ${\text{cm}}^{-1}$ region.

$\text{1-Methylcyclohexene}\underset{{\text{(2) NaHSO}}_{\text{3}}}{\overset{\text{ (1) OSO4 }}{\to }}\text{A}\left({\text{C}}_{\text{7}}{\text{H}}_{\text{14}}{\text{O}}_{\text{2}}\right)\underset{{\text{CH}}_{\text{3}}{\text{CO}}_{\text{2}}\text{H}}{\overset{{\text{ CrO}}_3}{\to }}\text{B }\left({\text{C}}_{\text{7}}{\text{H}}_{\text{12}}{\text{O}}_{\text{2}}\right)$