Using CCOC(=O)C1(CNc2cncc(-c3cc4ccccc4n3C)c2)CCC1 to produce Cn1c(-c2cncc(NCC3(C(=O)O)CCC3)c2)cc2ccccc21, please predict the solvent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.