Using CCC1(COC(C)=O)CCCN2CCc3c([nH]c4ccccc34)C21 to produce CCC1(CO)CCCN2CCc3c([nH]c4ccccc34)C21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.