Using O=CO, CCN(CC)CCCS(=N)(=O)c1ccc([N+](=O)[O-])cc1 to produce CCN(CC)CCCS(=O)(=NC)c1ccc([N+](=O)[O-])cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.