Using CCOCOc1ccc(CCCc2ccc(C(=O)OC)c(C(=O)OC)c2)cc1C to produce COC(=O)c1ccc(CCCc2ccc(O)c(C)c2)cc1C(=O)OC, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.