Using C=CCc1c(-c2cc(=O)c3c(O)cc(OCC(=O)OCC)cc3o2)ccc(OC)c1O to produce CCCc1c(-c2cc(=O)c3c(O)cc(OCC(=O)OCC)cc3o2)ccc(OC)c1O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.