Using CCC(O)(CC)c1cc(-c2ncc(OC)c3c(C(=O)C(=O)OC)c[nH]c23)n[nH]1 to produce CCC(O)(CC)c1cc(-c2ncc(OC)c3c(C(=O)C(=O)O)c[nH]c23)n[nH]1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.