Using CCCCCCCCCCc1cnc(-c2ccc(O)cc2)nc1, C1CCOC1 to produce CCCCCCCCCCc1cnc(-c2ccc(OC(=O)C3CC=C(CCCCC)CC3)cc2)nc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.