Using CCC1=NC(NC(=O)OCc2ccccc2)C(=O)N(CC(=O)N2CC3CCC(CC3)C2)c2c(C)cccc21 to produce CCC1=NC(N)C(=O)N(CC(=O)N2CC3CCC(CC3)C2)c2c(C)cccc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.