Using CCOC(=O)c1[nH]nc2c1CC1C3CCc4cc(OCc5ccccc5)ccc4C3CCC21C to produce CCOC(=O)c1[nH]nc2c1CC1C3CCc4cc(O)ccc4C3CCC21C, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.