Using COCCOCCOc1ccc2sc(C(=O)Nc3ccccc3NC(=O)OC(C)(C)C)cc2c1 to produce COCCOCCOc1ccc2sc(C(=O)Nc3ccccc3N)cc2c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.