Using Cc1ncccc1Cn1c(COCc2ccccc2)nc(C(C)C)c1Sc1cc(Cl)cc(Cl)c1 to produce Cc1ncccc1Cn1c(CO)nc(C(C)C)c1Sc1cc(Cl)cc(Cl)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.