Using O=c1cc(O)c2ccccc2o1, CCCC(O)c1ccc(CC)cc1 to produce CCCC(c1ccc(CC)cc1)c1c(O)c2ccccc2oc1=O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.