<Tr> <Td> Chemical formula </Td> <Td> </Td> </Tr> <Tr> <Td> Molar mass </Td> <Td> 104.15 g / mol </Td> </Tr> <Tr> <Td> Appearance </Td> <Td> colorless oily liquid </Td> </Tr> <Tr> <Td> Odor </Td> <Td> sweet, floral </Td> </Tr>

Which functional group is present in the styrene monomer