Using Oc1cccc(O)c1O, O=C(O)c1cc(O)c(O)c(O)c1 to produce O=C(c1cc(O)c(O)c(O)c1)c1ccc(O)c(O)c1O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.