Using CC1CCc2c(N3CCNCC3)ccc3c(=O)c(C(=O)O)cn1c23 to produce CC1CCc2c(N3CCNCC3)ccc3c2N1C=C(C(=O)O)C3, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.