Using COC(=O)COc1cccc(-c2cnc(N)c(-c3nc4ccccc4s3)c2)c1 to produce Nc1ncc(-c2cccc(OCC(=O)O)c2)cc1-c1nc2ccccc2s1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.