Using COc1ccc2cc([C@H](C)C(=O)O)ccc2c1, CC(CO)(CO)CO to produce COc1ccc2cc([C@H](C)C(=O)OCC(C)(CO)CO)ccc2c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.