Using CCOC(=O)C1(c2ccc(-c3ccc(-c4onc(C)c4/C=C/C(=O)OC)cc3)cc2)CC1 to produce CCOC(=O)C1(c2ccc(-c3ccc(-c4onc(C)c4CCC(=O)OC)cc3)cc2)CC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.