Using COC(=O)c1c(N(C(=O)OC(C)(C)C)C(=O)OC(C)(C)C)ccc2c1ccn1nccc21 to produce COC(=O)c1c(N(C(=O)OC(C)(C)C)C(=O)OC(C)(C)C)ccc2c1CCn1nccc1-2, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.