Using CCOC(=O)c1ncc2[nH]c3cccc(C(C)OCC)c3c2c1C to produce CCOC(C)c1cccc2[nH]c3cnc(C(=O)O)c(C)c3c12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.