Using COc1ccc(N2CCC3(CC2)CN(c2ccccc2)C(=O)O3)cc1 to produce O=C1OC2(CCN(c3ccc(O)cc3)CC2)CN1c1ccccc1, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.