Consider the following premises. forall x_12: Q(x_12) and T(x_12). exists x_12: T_3(x_12). forall x_12: U_3(x_12) <-> Q(x_12). Can we infer forall x_12: ~(T_3(x_12) and U_3(x_12)) from them?
That contradicts the premises. Therefore the answer is no.