Using CCOP(=O)(OCC)c1csc(-c2sccc2P(=O)(OCC)OCC)c1, O=C1CCC(=O)N1I to produce CCOP(=O)(OCC)c1csc(-c2sc(I)cc2P(=O)(OCC)OCC)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.