Using CCCc1c(OCCC2Cc3cc(C(=O)CCC(=O)OC)ccc3O2)ccc(C(C)=O)c1O to produce CCCc1c(OCCC2Cc3cc(C(=O)CCC(=O)O)ccc3O2)ccc(C(C)=O)c1O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.