Using NC1CC1, O=C(O)C1CN(C(=O)OCC2c3ccccc3-c3ccccc32)CCO1 to produce O=C(NC1CC1)C1CN(C(=O)OCC2c3ccccc3-c3ccccc32)CCO1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.