Using OO, CCCc1nc2c(C)cc(-c3cn(C)cn3)cc2n1Cc1ccc(-c2ccccc2C=O)cc1 to produce CCCc1nc2c(C)cc(-c3cn(C)cn3)cc2n1Cc1ccc(-c2ccccc2C(=O)O)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.