Simplify the following: (2y-1)(4y^{10}+2y^9+2y^8+y^7). Express your answer as a polynomial with the degrees of the terms in decreasing order.
\((2y-1)(4y^{10}+2y^9+2y^8+y^7)\)
\(= \boxed{8y^{11}+2y^9-y^7}\)