E.48 For each IUPAC name, draw the complete structure. (a) (2S,3R,4R)-2,3-diamino-4-hydroxycyclopentanone; (b) (2R,3R)-2-butyl-3-hydroxypentanedial; (c) (4S,5R)-4,5-diaminoheptane-2,3,6-trione; (d) (3E,5R,6Z)5-hydroxy-7-methoxyocta-3,6-dien-2-one