<Tr> <Th> Reaction name </Th> <Th> Product </Th> <Th> </Th> </Tr> <Tr> <Td> Dehydration </Td> <Td> Nitrile </Td> <Td> Reagent: phosphorus pentoxide; benzenesulfonyl chloride; TFAA / py </Td> </Tr> <Tr> <Td> Hofmann rearrangement </Td> <Td> Amine with one fewer carbon atom </Td> <Td> Reagents: bromine and sodium hydroxide </Td> </Tr> <Tr> <Td> Amide reduction </Td> <Td> Amine </Td> <Td> Reagent: lithium aluminium hydride followed by hydrolysis </Td> </Tr>

What is the structure of the compound formed by dehydration of x