Using CCCCCCCOc1nsnc1C1CN=CN(C(c2ccccc2)(c2ccccc2)c2ccccc2)C1 to produce CCCCCCCOc1nsnc1C1CN=CNC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.