Using CCC=O, COc1ccc2c(c1)CC(NC1CCN(Cc3ccccc3)CC1)CC2 to produce CCCN(C1CCN(Cc2ccccc2)CC1)C1CCc2ccc(OC)cc2C1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.