Using CN(C)C=O, COCn1c(-c2ccccc2)c(C2CCCCC2)c2sc(C(=O)O)cc21 to produce COCn1c(-c2ccccc2)c(C2CCCCC2)c2sc(C(=O)O)c(C=O)c21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.