Using O=c1oc(=O)n(Cc2ccccc2)c2ncccc12, CCOC(=O)CC(=O)OCC to produce CCOC(=O)c1c(O)c2cccnc2n(Cc2ccccc2)c1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.