Błąd w składni SQL - Access

Cześć,

Będą mega wdzięczny za pomoc, otóż występuję mi błąd w kwerendzie:

Błąd składniowy (brak operatora) w wyrażeniu kwerendy 'imp.[contract]'

Na dole skrypt:

select
imp.[contract],
imp.[saldo_imp]
from

(select
customers.[contract_id] as contract,
imper.[imperment] as saldo_imp
from customers

inner join

(SELECT
IMPERMENT.[contract_id] as ici,
IMPERMENT.[ccy] as ic,
sum(IMPERMENT.[amount_integr]) as dodawanie,
dodawanie * kursy.ks as imperment
FROM IMPERMENT

inner join

(SELECT
waluty.[Kod_waluty] as kl,
Waluty.[Kurs_sredni] as ks
FROM Waluty) as kursy

on kursy.kl = IMPERMENT.[ccy]

where
IMPERMENT.[export_status] = 0
and IMPERMENT.[return_status] = 1
group by
IMPERMENT.[contract_id],
IMPERMENT.[ccy],
kursy.ks) as imper

on imper.[ici] = customers.[contract_id]) as imp

inner join

(SELECT
Accrual_Table.[contract_id] as ci,
Accrual_Table.[ccy] as c,
sum(Accrual_Table.[amount_accrual]) as suma,
suma * w.kr as Accrual
FROM Accrual_Table

inner join

(SELECT
waluty.[Kod_waluty] as kw,
Waluty.[Kurs_sredni] as kr
FROM Waluty) as w

on w.kw = Accrual_Table.[ccy]

group by
Accrual_Table.[contract_id],
Accrual_Table.[ccy],
w.kr) as nowy

on nowy.[ci] = imp.[contract]

Bardzo proszę o pomoc

pozdrawiam,