Using C=CCOC(=O)c1cccc(S(=O)(=O)N2C(=O)CN(c3ccccc3)C2=O)c1 to produce O=C(O)c1cccc(S(=O)(=O)N2C(=O)CN(c3ccccc3)C2=O)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.