Using CCCCCI, O=C1C(=Cc2ccc3c(c2)OCO3)Oc2cc(O)ccc21 to produce CCCCCOc1ccc2c(c1)OC(=Cc1ccc3c(c1)OCO3)C2=O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.