code: def sub_park_3(x):
      """Computes park function"""
      x1 = x[0]
      x2 = x[1]
      x3 = x[2]
      x4 = x[3]
      ret = (2.5 / 3.0) * np.exp(2 * x1 + x2) - x4 * np.sin(x3) + x3
      return ret
  
file_path: dragonfly/dragonfly/test_data/park2_4/park2_4.py
imports: import numpy
label_desc: Use image node_id 3 for calling a global function with example usage: sub_park_3(x) and returns: ret