Using COc1cc(OC)nc(C2(O)OC(=O)c3c(-c4ccccc4)ccnc32)n1 to produce COc1cc(OC)nc(C2OC(=O)c3c(-c4ccccc4)ccnc32)n1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.