Using COC(=O)c1cc(COc2cccc(C)c2)c(C(=O)OC)n1C to produce Cc1cccc(OCc2cc(C(=O)O)n(C)c2C(=O)O)c1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.