Using O=C1c2ccccc2C(=O)N1CCN1CCC(c2c[nH]c3ccccc23)CC1 to produce NCCN1CCC(c2c[nH]c3ccccc23)CC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.