Using O=C(CCl)N1CCCC1, CNC1CCC(Oc2ncnc3sc4c(c23)[C@@H](C[C@H](O)C(N)=O)CC4)CC1 to produce CN(CC(=O)N1CCCC1)C1CCC(Oc2ncnc3sc4c(c23)[C@@H](C[C@H](O)C(N)=O)CC4)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.