Using CC(C)(C)OC(=O)N1CC2C(C1)C2NC(=O)OCC1c2ccccc2-c2ccccc21 to produce O=C(NC1C2CNCC21)OCC1c2ccccc2-c2ccccc21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.