Using CCO, CCOC(=O)c1nc(SC)n(C)c(=O)c1OCc1ccccc1 to produce CCOc1nc(C(=O)O)c(OCc2ccccc2)c(=O)n1C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.