Using CCOC(=O)C1(C(=O)OCC)CCn2c(C(=O)c3ccccc3)ccc21 to produce O=C(c1ccccc1)c1ccc2n1CCC2C(=O)O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.