Using C1CCOC1, CC(C)N1CC(C(=O)Oc2ccc3c(c2)CCC3)OCC1=O to produce CC(C)N1CC(C(C)(O)Oc2ccc3c(c2)CCC3)OCC1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.