Using CCOC(=O)CN1C(=O)C(NC(=O)OCc2ccccc2)N=C(CC)c2cccc(C)c21 to produce CCC1=NC(NC(=O)OCc2ccccc2)C(=O)N(CC(=O)O)c2c(C)cccc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.