Using CCCCCCC(C)(C)c1cc(OC)cc(OCC)c1, O=C1CCCCC1 to produce CCCCCCC(C)(C)c1cc(OC)c(C2CCCC(=O)C2)c(OCC)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.