Identify 4 functional group:

O
||
HO CH2 C
\ / \ / \
Benzen ring CH OH
/ |
HO NH2

1)carboxylic acid functional group
2)amine functional group
3)alcohol functional group

i only know three is anyone can tell me the last functional group.please

2 answers

Spacing is a problem with formulas; they just can't be done.
I agree with what you have. Isn't the phenyl group(benzene minus a H) a functional group also?
Two Alcohols (OH groups), one carboxylic acid (CO2H), and one amine (NH2) equals four.