Using O/N=C/c1ccccc1, CCOC(=O)C#Cc1cc(Cl)ccc1C1(C(=O)OCC)CCC2(CC1)OCC(C)(C)CO2 to produce CCOC(=O)C1=C(O)c2cc(Cl)ccc2C2(CCC3(CC2)OCC(C)(C)CO3)C1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.