Using O=C(O)CCCBr, CC(C)CC(CO)NC(=O)OC(C)(C)C to produce CC(C)CC(COC(=O)CCCBr)NC(=O)OC(C)(C)C, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.