Using CCCCCCCCCCCc1cnc(-c2ccc(O)cc2)nc1, CCC1CCC(C(=O)O)C1 to produce CCCCCCCCCCCc1cnc(-c2ccc(OC(=O)C3CCC(CC)C3)cc2)nc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.