Using Clc1ccc(Sc2oc(C3CCOCC3)nc2Br)cc1, O=C=O to produce O=C(O)c1nc(C2CCOCC2)oc1Sc1ccc(Cl)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.