Using O=C1Cc2cc(Sc3ccccc3)ncc2N1, CCOC(=O)c1cccs1 to produce O=C1Nc2cnc(Sc3ccccc3)cc2C1C(=O)c1cccs1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.