Using CCO, C=C(CCN1C(=O)c2ccccc2C1=O)CN(Cc1nc2ccccc2n1C(=O)OC(C)(C)C)C1CCCc2cccnc21 to produce C=C(CCO)CN1C(=O)c2ccccc2C1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.