Using COc1cc(CCCCC(=O)C2NC3C=CC2C3)cc(OC)c1OC to produce COc1cc(CCCCC(=O)C2NC3CCC2C3)cc(OC)c1OC, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.