The amino acid serine can be methylated at the nitrogen atom in cells and can act as a messenger in certain immunological reactions. Its structure is shown below. 1. (a)

Give the correct systematic name for this structure. In your answer, make sure you include the appropriate R/S label. (3 marks) (b) How many sp hybridised carbon atoms are there in this molecule? (1 mark) (c) How many lone pairs are there in this molecule, and to which atoms do they belong?(2 marks)