Using CCn1ccnc1CCOc1ccc(C=CC(=O)N[C@H]2CC[C@H](C)CC2)cc1OC to produce CCn1ccnc1CCOc1ccc(CCC(=O)N[C@H]2CC[C@H](C)CC2)cc1OC, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.