Using CCOB(OCC)OCC, Brc1ccc(-c2ccccc2)c2c3c(c(-c4ccccc4)cc12)-c1cccc2cccc-3c12 to produce OB(O)c1ccc(-c2ccccc2)c2c3c(c(-c4ccccc4)cc12)-c1cccc2cccc-3c12, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.