Using CI, COC(=O)c1sc(COC(=O)NCc2ccccc2)cc1-c1ccccc1 to produce COC(=O)c1sc(COC(=O)N(C)Cc2ccccc2)cc1-c1ccccc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.