Using CCC(C)(C)OC(C)=O, COC(=O)[C@@H](O)c1c(C)nc2cc3nn2c1N1CCC(C)(CC1)OCCCC[C@H](C)Oc1ccc(C)cc1-c1cccc-3c1 to produce CCC(C)(C)O[C@H](C(=O)OC)c1c(C)nc2cc3nn2c1N1CCC(C)(CC1)OCCCC[C@H](C)Oc1ccc(C)cc1-c1cccc-3c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.