Using Cn1c(CBr)nc2c(N3CCOCC3)nc(Cl)nc21, CC1(C)CN(C(=O)OC(C)(C)C)CCN1 to produce Cn1c(CN2CCN(C(=O)OC(C)(C)C)CC2(C)C)nc2c(N3CCOCC3)nc(Cl)nc21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.