Write all the functional groups of the following molecule (condensed formula) OHC₆H₆CH₂CH(NH₂)C(O)OH CH₃OCH₂CH(SH)C(CHCH₂C(O)OCH₂CH₃)CH₂CH₂C(O)OH
a) Alcohol, Amine, Carboxylic acid, Thiol, Ester
b) Ketone, Aldehyde, Amide, Ether, Alkene
c) Alcohol, Amine, Carboxylic acid, Thiol, Ketone
d) Alkane, Ester, Alkyne, Sulfide, Alcohol