Using COC(=O)c1cc(-c2ccc(OC)cc2)nc2c1[nH]c1nc(OC)ccc12 to produce COc1ccc(-c2cc(C(=O)O)c3[nH]c4nc(OC)ccc4c3n2)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.