Using Cc1c[nH]c(=O)[nH]c1=O, CC(=O)OC[C@]1(COCc2ccccc2)OC(OC(C)=O)[C@H](OC(C)=O)[C@@H]1OCc1ccccc1 to produce CC(=O)OC[C@]1(COCc2ccccc2)O[C@@H](n2cc(C)c(=O)[nH]c2=O)[C@H](OC(C)=O)[C@@H]1OCc1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.