157.17.2. Section 157.17.1 does not apply in respect of a corporation, in relation to a given partnership, if the Minister is of the opinion that the interposition, between the corporation and the given partnership, of one or more other partnerships is part of an operation or transaction or of a series of operations or transactions, one of the purposes of which is to cause the corporation to be able to deduct, in computing its income for a taxation year under section 157.17, an amount greater than the amount that the corporation could have so deducted for that taxation year, but for that interposition.