#include "oechem.h"
#include <iostream>
#include <string>

using namespace OEChem;
using namespace std;

int main()
{
  char buffer[1024];

  while (cin.getline(buffer,1024))
  {
    OEMol mol;
    if (OEParseSmiles(mol,buffer))
    {
      string str;
      OEAssignAromaticFlags(mol);
      OECreateCanSmiString(str,mol);
      cout << str << endl;
    }
    else cerr << buffer << " is an invalid SMILES!" << endl;
  }
  return 0;
}