Using CC(C)(C)OC(=O)NC1(CNC2C3CC4(O)CC2CC(O)(C3)C4)CCCC1 to produce NC1(CNC2C3CC4(O)CC2CC(O)(C3)C4)CCCC1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.