1. Draw the terse structure for each intermediate/product in the following multistep synthetic scheme. Indicate appropriate stereochemistry (are intermediates enantiomers, diastereomers, or meso).
mCPBA
1. CH$_3$CH$_2$Li
H$_3$O$^+$
mCPBA
NaBr
B
C
D
E
2. H$_3$O$^+$
heat
EtOH
NaOH,
heat
CH$_2$N$_2$
G
F
hv