ECTI
(7) The term ECTI means, with respect to a taxable year of a specified foreign person, the taxable income (or loss) of the specified foreign person determined by taking into account only items of income and gain that are, or are treated as, effectively connected with the conduct of a trade or business in the United States (as described in 1.882-4(a)(1)) and are not exempt from U.S. tax pursuant to a treaty obligation of the United States, and items of deduction and loss that are allocated and apportioned to such items of income and gain.