Using CCOP(=O)(OCC)c1ccc(C(O)c2cc(OC(C)C)cc(C(=O)O)c2)s1 to produce CCOP(=O)(OCC)c1ccc(Cc2cc(OC(C)C)cc(C(=O)O)c2)s1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.