Using C[C@]12CC[C@H]3[C@@H](C[C@H](O)C4C[C@@H](O)CC[C@@]43C)[C@@H]1CC[C@@H]2O to produce C[C@]12CC[C@H]3[C@@H](CC(=O)C4C[C@@H](O)CC[C@@]43C)[C@@H]1CC[C@@H]2O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.