Using COC(=O)CCc1ccc(OCCc2nc(-c3cc4ccccc4s3)oc2C)cc1 to produce Cc1oc(-c2cc3ccccc3s2)nc1CCOc1ccc(CCC(=O)O)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.