Using CCN(CCCN1c2ccccc2N(C)C(=O)c2c(C)cc(C)nc21)Cc1ccccc1 to produce CCNCCCN1c2ccccc2N(C)C(=O)c2c(C)cc(C)nc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.