Using Cc1csc(S)n1, CC(C)(C)OC(=O)N1CCc2ccc(Cl)c(CCl)c2CC1 to produce Cc1csc(SCc2c(Cl)ccc3c2CCN(C(=O)OC(C)(C)C)CC3)n1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.