Using O=[N+]([O-])c1ccccc1S(=O)(=O)Cl, CCOC(=O)c1cc(OCCN)cc(C(=O)OCC)n1 to produce CCOC(=O)c1cc(OCCNS(=O)(=O)c2ccccc2[N+](=O)[O-])cc(C(=O)OCC)n1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.