Using O=C1NC(=O)c2ccccc21, OCC1CN(Cc2ccccc2)CCN1Cc1ccccc1 to produce O=C1c2ccccc2C(=O)N1CC1CN(Cc2ccccc2)CCN1Cc1ccccc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.