Using COC1(c2ccc(OCCCC(=O)c3ccccc3)cc2)OCCO1 to produce O=C(CCCOc1ccc(C2(O)OCCO2)cc1)c1ccccc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.