Using O=Cc1cn(Cc2ccc(OCc3coc(-c4ccccc4)n3)cc2)nc1-c1cccs1, CCOC(=O)CC(=O)OCC to produce CCOC(=O)C(Cc1cn(Cc2ccc(OCc3coc(-c4ccccc4)n3)cc2)nc1-c1cccs1)C(=O)OCC, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.