Using C1COCCNN1, Cc1cc(C)c(C(C(N)=O)C(N)=O)c(C)c1 to produce Cc1cc(C)c(C2C(=O)N3CCOCCN3C2=O)c(C)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.