Thermoplastic molding compositions, comprisingA) at least one thermoplastic polyester A,B) at least one graft polymer B of b1) a graft base of an elastomeric polymer B1 based on alkyl acrylates, ethylenepropylene, dienes, or on siloxanes, and with a glass transition temperature below 0\xb0 C. Also, a determination is made as to whether the EUD associated with the particular dose distribution is greater than a second dose tolerance associated with a second structure within the subject. In response to identifying such instructions, alternate code may be generated that forces the critical section to be executed as an atomic transaction, e.