?????????????????? ??????? ???? ????????? ????.???????? ??????? ??????????????? ?? ??? ????.?????? ?????? ???????????? ???? ??? ??. ???????? ???????????? ?????? ???????? ??? ???????? ??.??? ??: ?????, ????, ?????? ??????? ??? ??????????.Acetildenafil and other synthetic structural analogs of sildenafil which might be PDE5 inhibitors happen to be id