Using CCOC(=O)CN, CCOC(=O)CCCNC1=NS(=O)(=O)c2ccccc21 to produce CCOC(=O)CNC1=NS(=O)(=O)c2ccccc21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.