Please assess the completion status of the following clinical trial:

Trial Title: Efficacy of Intracoronary Infusion of Different Medicine in STEMI Patients With CSFP

Study Design Characteristics:
- Allocation: RANDOMIZED
- Intervention Model: PARALLEL
- Observational Model: None
- Primary Purpose: TREATMENT
- Time Perspective: None
- Masking: SINGLE
- Phase: PHASE4
- Number of Arms: 2.0

Eligibility Criteria:
Inclusion Criteria:~Patents with myocardial infarction who have symptom onset within 12h before randomization; ECG: ≥2 mm ST-segment elevation in 2 contiguous precordial leads or ≥1 mm ST-segment elevation in 2 contiguous extremity leads ; Corrected TIMI frame counted (cTFC) measured from the final angiographic imaging after PCI exceeding 40 frames; Signed informed consent form prior to trial participation.~Exclusion Criteria:~Coronary artery bypass surgery (CABG) history; Failed in stents implanting; Severe heart failure; Cardiogenic shock.

- Gender: ALL
- Minimum Age: None
- Maximum Age: None
- Healthy Volunteers: f

Study Arms:
- alprostadil (Type: EXPERIMENTAL): alprostadil,2ug, delivered by targeted perfusion catheter in the culprit vessel after PCI in STEMI patients with CSFP
- nitroglycerin (Type: PLACEBO_COMPARATOR): nitroglycerin,200ug, delivered by targeted perfusion catheter in the culprit vessel after PCI in STEMI patients with CSFP

Based on this trial design, predict the completion outcome and termination type (if applicable).