Using COC(=O)c1ccc(Oc2ccc(C(=O)OC)c(C(=O)OC)c2)cc1C(=O)OC to produce COC(=O)C1CCC(OC2CCC(C(=O)OC)C(C(=O)OC)C2)CC1C(=O)OC, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.