Using CCOC(=O)c1cnc2c(NC(=O)c3c(Cl)cccc3Cl)cccc2c1SCC(=O)OC(C)(C)C to produce CCOC(=O)c1cnc2c(NC(=O)c3c(Cl)cccc3Cl)cccc2c1SCC(=O)O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.