Using O=C(O)c1ccc2cc(O)ccc2c1, Oc1ccc2cc(O)ccc2c1 to produce O=C(Oc1cccc2cc(O)ccc12)c1ccc2cc(O)ccc2c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.