Using COC1(NC(=O)COc2ccccc2)C(=O)N2C(C(=O)OCOC(=O)C(C)(C)C)C(C)C(=O)[C@@H]21 to produce COC1(NC(=O)COc2ccccc2)C(=O)N2C(C(=O)OCOC(=O)C(C)(C)C)C(C)C(O)[C@@H]21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.