Using O=S(=O)(O)O, Cc1c(-c2ccc(C(N)=O)c3[nH]c4cc(C=O)ccc4c23)cccc1N1Cc2ccccc2C1=O to produce Cc1c(-c2ccc(C(N)=O)c3[nH]c4cc(O)ccc4c23)cccc1N1Cc2ccccc2C1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.