Using COc1c(C)c(C)c(OC)c(C(CCCCCC(=O)O)c2cccnc2)c1C to produce COc1c(C)c(C)c(OC)c(C(CCCCCCO)c2cccnc2)c1C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.