Using CCCc1c(OCCCCC2(C)CC(=O)c3ccc(OCC(=O)OC)cc3O2)ccc(C(C)=O)c1O to produce CCCc1c(OCCCCC2(C)CC(=O)c3ccc(OCC(=O)O)cc3O2)ccc(C(C)=O)c1O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.