<qa>  How many times in total will the first cohort of eight patients receive 2-IB?The first cohort of eight patients will receive 2-IB in a dose of 0,055 mgkgdose every 4 h iv, 6 times in total part A. The second cohort of eight patients cohort B will receive an anticipated dose of 0,165 mgkgdose every 4h iv, 6 times in total ,and the third cohort of eight patients cohort C will receive an anticipated dose of 0,500 mgkgdose every 4h iv, 6 times in total. The first dose has to be given as soon as possible and within 6h after OHCA. Escalation to the next dose level will only be done after pharmacokinetic analyses have performed, no relevant safety issues have been encountered, and the DSMB approves to move to the next dose level. 