Using COc1ccc(CNC2(Cc3ccccc3)CCC3(CC2)OCCO3)cc1 to produce COc1ccc(CNC2(Cc3ccccc3)CCC(=O)CC2)cc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.