Using CC[C@]12CC[C@H]3[C@@H](CC=C4C=C(OC)CC[C@@H]43)[C@@H]1[C@@H](OC(C)=O)CC2=O to produce CC[C@]12CC[C@H]3[C@@H](CC=C4C=C(OC)CC[C@@H]43)[C@@H]1C=CC2=O, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.